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Black Tourmaline Mineral Specimens and Black Tourmaline Crystals


Natural Black Tourmaline Crystal


Code: tbkm647
This naturally terminated black tourmaline measures 1.3" x 1.1" x 0.9"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $22.95
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some abrasions. The lower part of prismatic faces show contact surfaces from where this crystal grew up against other black tourmaline crystals.

Natural Black Tourmaline Crystal


Code: tbkm648
This naturally terminated black tourmaline measures 1.6" x 1.2" x 0.9"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $28.95
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some abrasions.

Rose Quartz with Black Tourmaline


Code: rsqm202
Rose Quartz Specimen Dimensions: 2.2" x 2.1" x 1.4"
Mined in Minas Gerais, Brazil in 1993
Price: $34.95
This natural quartz matrix specimen has a black tourmaline crystal embedded in its surface. The quartz matrix has colorless and pale pink natural color areas.

Rose Quartz with Black Tourmaline Specimen


Code: rsqm198
Rose Quartz Specimen Dimensions: 3.2" x 2.9" x 1.7"
Mined in Minas Gerais, Brazil in 1993
Price: $38.95
This natural quartz matrix specimen has a large black tourmaline embedded in its surface. The quartz matrix has white and pink natural color areas. It is very unusual for black tourmaline to form together with rose quartz!

Rose Quartz with Black Tourmaline


Code: rsqm199
Natural color rose quartz specimen weighing one pound
Rose Quartz Specimen Dimensions: 4.3" x 3.2" x 1.7"
Mined in Minas Gerais, Brazil in 1993
Price: $51.95
This natural quartz matrix specimen has has about 20 black tourmalines embedded in its surfaces. On the front surface shown at left, the quartz matrix has white and pale pink natural color areas. On the back surface the quartz matrix is colorless. See also an opposite side view of this unique specimen of quartz with black tourmaline.

Rose Quartz with Black Tourmaline


Code: rsqm200
Natural color rose quartz specimen weighing two pounds
Rose Quartz Specimen Dimensions: 5.4" x 4.4" x 2.4"
Mined in Minas Gerais, Brazil in 1993
Price: $122.95
This natural quartz matrix specimen has a large black tourmaline embedded in its surface along with some muscovite mica. The quartz matrix has white and pale pink natural color areas. See also an opposite side view of this unique specimen of quartz with black tourmaline.

Rose Quartz with Black Tourmaline Decorator Specimen


Code: rsqm201
Natural color rose quartz specimen weighing 5.7 pounds
Rose Quartz Specimen Dimensions: 7" x 4.8" x 3.7"
Mined in Minas Gerais, Brazil in 1993
Price: $265.00 (original price: $345.)
This beautiful decorator specimen of natural rose quartz has large black tourmalines embedded in its surface along with some muscovite mica. The quartz matrix has colorless and pink natural color areas! See also an opposite side view of this unique decorator specimen of rose quartz with black tourmaline. See an additional view of this completely natural decorator mineral specimen of rose quartz with black tourmalines.

Large Black Tourmalines in Quartz Decorator Specimen


Code: rsqm204
Natural quartz matrix specimen weighing 10.5 pounds
Tourmaline in Quartz Specimen Dimensions: 11" x 7" x 3.5"
Mined in Minas Gerais, Brazil in 1993
Price: $485.00 (original price: $595.)
This is a very beautiful decorator specimen of natural rose quartz with large black tourmalines embedded in its surface along with some muscovite mica. The largest of the black tourmaline crystals is just over 7 inches long! The quartz matrix has colorless areas and areas with pale pink natural color! See also an opposite side view of this unique decorator specimen of quartz with large black tourmalines. See an additional view of this completely natural decorator mineral specimen of rose quartz with black tourmalines.

Large Decorator Specimen of Black Tourmalines in Quartz


Code: rsqm203
Natural quartz matrix specimen weighing 23.4 pounds
Tourmaline in Quartz Specimen Dimensions: 9" x 7.5" x 7.5"
Mined in Minas Gerais, Brazil in 1993
Price: $825.00 (original price: $1170.)
This large specimen of natural rose quartz with black tourmalines makes a very nice decorator mineral specimen! There are several large intergrown black tourmalines crystals embedded in the quartz matrix. The quartz matrix has colorless areas and areas with pale pink natural color! See also a side view of this unique decorator specimen of black tourmalines in quartz matrix.

Black Tourmaline Mineral Specimen


Code: tbkm627
Natural black tourmaline crystal section weighs 1.9 pounds
Black Tourmaline Dimensions: 4" x 3.3" x 2.7"
Discovered in Brazil
Price: $94.50
This naturally terminated black tourmaline specimen was mined in Brazil. It is a black tourmaline crystal section with some rough broken surfaces. It has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This black tourmaline specimen is completely natural with no treatments of any kind - exactly how it formed within the earth. See also a different view of this natural black tourmaline crystal section.

Black Tourmaline Crystals in Pegmatite Matrix


Code: tbkm624
This black tourmaline in matrix specimen weighs 1.4 pounds
Natural black tourmaline specimen dimensions: 5" x 2.8" x 2.7"
Discovered by native miners in Minas Gerais, Brazil
Price: $54.50
This natural pegmatite mineral specimen has a matrix of translucent quartz with some albite and mica. There are over 100 black tourmaline crystals embedded in the surfaces and all through the matrix! This black tourmaline in matrix mineral specimen is completely natural with no treatments of any kind - exactly how it formed within the earth.

Black Tourmaline Crystals in Pegmatite Matrix


Code: tbkm625
This black tourmaline in matrix specimen weighs 2.1 pounds
Natural black tourmaline specimen dimensions: 5.5" x 4.4" x 2.3"
Discovered by native miners in Minas Gerais, Brazil
Price: $88.50
This natural pegmatite mineral specimen has a matrix of translucent quartz with some albite and mica. There are over 200 black tourmaline crystals embedded all through the matrix! This black tourmaline in pegmatite matrix specimen is completely natural with no treatments of any kind - exactly how it formed within the earth.

Small Black Tourmaline Crystal


Code: tbkm646
This naturally terminated black tourmaline measures 0.9" long x 0.9" x 0.9"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $21.95
This small black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This small tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition with a small amount of clay minerals on some surfaces.

Natural Black Tourmaline Crystal


Code: tbkm649
This naturally terminated black tourmaline measures 1.3" long x 1.3" x 1.3"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $34.95
This unique black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good condition.

Black Tourmaline Crystal


Code: tbkm651
This naturally terminated black tourmaline measures 1.8" long x 1.3" x 1.3"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $38.95
This unique black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some minor abrasions.

Black Tourmaline Crystal


Code: tbkm650
This naturally terminated black tourmaline measures 1.5" x 1.4" x 1.4"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $46.95
This unique black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition.

Black Tourmaline Crystal


Code: tbkm652
This naturally terminated black tourmaline measures 1.8" long x 1.5" x 1.4"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $48.95
This unique black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some minor abrasions. There is a small amount of schist matrix on most surfaces.

Black Tourmaline in Mica Schist Matrix


Code: tbkm640
Black Tourmaline in Matrix Specimen Dimensions: 3" x 1.8" x 1.7"
Mined in Brazil
Price: $32.50
This natural mineral specimen of black tourmalines in matrix has a mica schist matrix with partially terminated black tourmaline crystals embedded in its surface.

Black Tourmalines in Schist Matrix


Code: tbkm642
This schist matrix specimen weighs 1.3 pounds
Black Tourmaline in Matrix Specimen Dimensions: 4.6" x 3.3" x 2.2"
Mined in Brazil
Price: $88.50
This natural mineral specimen of black tourmalines in mica schist matrix has several terminated black tourmaline crystals embedded in its front surface as shown. There are a few more black tourmalines exposed on the opposite side.

Black Tourmaline in Mica Schist Matrix


Code: tbkm641
This schist matrix specimen weighs 1.8 pounds
Black Tourmaline in Matrix Specimen Dimensions: 6.2" x 2.8" x 2.3"
Mined in Brazil
Price: $88.50
This natural mineral specimen of black tourmalines in mica schist matrix has a 1.2 inch long bi-terminated black tourmaline crystal embedded in its front surface as shown. There are several smaller black tourmalines exposed on the opposite side.

Black Tourmaline in Mica Schist Matrix


Code: tbkm643
This schist matrix specimen weighs 1.6 pounds
Black Tourmaline in Matrix Specimen Dimensions: 4.9" x 4" x 1.7"
Mined in Brazil
Price: $98.50
This natural mineral specimen of black tourmalines in mica schist matrix has a 2.7 inch long terminated black tourmaline crystal embedded in its front surface as shown. There are several smaller black tourmalines exposed on its other surfaces.

Black Tourmalines in Mica Schist Matrix Decorator Specimen


Code: tbkm644
This schist matrix specimen weighs 3.6 pounds
Black Tourmalines in Matrix Specimen Dimensions: 8.5" x 4.5" x 2.2"
Mined in Brazil
Price: $168.50
This natural mineral specimen weighs 3.6 pounds. It has two dozen black tourmaline crystals exposed on the surface of the mica schist matrix. See also a full view of this natural decorator mineral specimen of tourmaline in matrix.

Tourmaline in Matrix Decorator Specimen


Code: tbkm645
This schist matrix specimen weighs 3.6 pounds
Black Tourmalines in Matrix Specimen Dimensions: 6.8" x 6" x 2.8"
Mined in Brazil
Price: $168.50
This natural decorator mineral specimen has several black tourmaline crystals exposed on the surface of the mica schist matrix.

Natural Black Tourmaline Crystal


Code: tbkm653
This unique black tourmaline specimen measures 2.4" x 1.5" x 1.3"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $54.50
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some abraded areas. See also a different side view of this natural black tourmaline crystal.

Natural Black Tourmaline Crystal


Code: tbkm654
This unique black tourmaline specimen measures 2.2" x 1.7" x 1.7"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $64.50
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some abraded areas.

Natural Black Tourmaline Crystal


Code: tbkm607
This unique black tourmaline specimen measures 2.4" x 2.2" x 1.8"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $72.50
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition. See also a different side view of this natural black tourmaline crystal.

Natural Black Tourmaline Crystal


Code: tbkm655
This unique black tourmaline specimen measures 2" x 1.9" x 1.9"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $88.50
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition.

Black Tourmaline Crystal


Code: tbkm606
This naturally terminated black tourmaline measures 2.8" x 2.2" x 2"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $92.50
This unique black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some minor abrasions.

Natural Black Tourmaline Crystal


Code: tbkm600
This unique black tourmaline specimen measures 2.5" x 2.5" x 2.1"
Discovered by garimperos in Minas Gerais, Brazil
Price: $94.50
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some minor abrasions. See another view of this natural black tourmaline crystal.

Natural Black Tourmaline Crystal Specimen


Code: tbkm612
This unique black tourmaline measures 2.7" x 2.6" x 2.3"
Natural black tourmaline specimen was mined in Brazil
Price: $104.25
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline crystal specimen are in very good condition overall.

Black Tourmaline Mineral Specimen


Code: tbkm431
Natural black tourmaline specimen measuring 2.8" x 2.6" x 2" tall
This unique black tourmaline mineral specimen was mined in Brazil
Price: $114.95
This naturally terminated black tourmaline mineral specimen shows trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition with some minor abrasions. See another view of this natural black tourmaline mineral specimen.

Natural Black Tourmaline Crystal


Code: tbkm512
This unique black tourmaline specimen measures 2.7" x 2.3" x 2.3"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $114.95
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good condition.

Natural Black Tourmaline Crystal


Code: tbkm608
This unique black tourmaline specimen measures 3.1" x 2.8" x 2.3"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $122.50
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition. This tourmaline crystal is completely natural, just as it was found in the earth. See also a different side view of this natural black tourmaline crystal.

Natural Black Tourmaline Crystal


Code: tbkm601
Natural black tourmaline specimen weighs 1.1 Lbs
This unique black tourmaline measures 3.3" long x 2.5" x 2.4"
Discovered by garimperos in Minas Gerais, Brazil
Price: $141.25
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition with some minor abrasions. This tourmaline crystal is completely natural, just as it was found in the earth. See an opposite side view of this natural black tourmaline crystal.

Black Tourmaline Crystal Specimen


Code: tbkm609
Natural black tourmaline specimen weighs 1.2 Lbs
This unique black tourmaline crystal measures 3" x 2.6" x 2.4"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $154.50
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good condition with some minor abrasions and a small amount of schist matrix on some surfaces. See also a different side view of this natural black tourmaline crystal.

Naturally Terminated Black Tourmaline Crystal Specimen


Code: tbkm613
Natural color black tourmaline weighs 1.4 Lbs
This unique black tourmaline specimen measures 3.2" x 2.8" x 2.6"
Black tourmaline mineral specimen discovered by garimperos in Brazil
Price: $181.25
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some abraded areas.

Black Tourmaline Mineral Specimen


Code: tbkm611
Natural black tourmaline crystal weighing 1.8 Lbs
This unique black tourmaline crystal measures 4" x 3.7" x 2.4"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $234.25
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good condition with some minor abrasions. See a different side view of this natural black tourmaline mineral specimen. See also another view of this natural black tourmaline mineral specimen.

Large Black Tourmaline Crystal Specimen


Code: tbkm631
Naturally terminated black tourmaline weighs 2.0 Lbs
This unique black tourmaline specimen measures 3.7" x 3.3" x 3"
Black tourmaline mineral specimen discovered by local garimperos in Brazil
Price: $258.25
This naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in good overall condition with some minor abrasions and a small amount of schist matrix still attached on some surfaces. See another view of this naturally terminated black tourmaline crystal.

Large Crystal of Natural Black Tourmaline


Code: tbkm634
Natural black tourmaline specimen weighing 2.7 Lbs
Unique black tourmaline crystal measurements: 4" x 3.6" x 3.3"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $345.00
This naturally terminated crystal of black tourmaline has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition with an abraded corner. See a side view of this naturally terminated black tourmaline.

Large Crystal of Natural Black Tourmaline


Code: tbkm635
Natural black tourmaline specimen weighing 2.8 Lbs
Unique black tourmaline crystal measurements: 4" x 3.7" x 3.5"
Genuine black tourmaline mineral specimen discovered by native miners in Brazil
Price: $355.00
This naturally terminated crystal of black tourmaline has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition with some abraded edges. See a side view of this naturally terminated black tourmaline.

Large Terminated Black Tourmaline Specimen


Code: tbkm592
Natural black tourmaline weighing 3.2 Lbs
Black Tourmaline Mineral Specimen Dimensions: 4.1" x 3.7" x 3.5"
This unique black tourmaline was discovered by garimperos in Brazil
Price: $395.00
This naturally terminated crystal of black tourmaline has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This black tourmaline crystal is completely natural, just as it was found in the earth. The lower prismatic faces are abraded, and the upper prismatic faces & terminations of this natural black tourmaline specimen are in good condition. See also a side view of this natural black tourmaline mineral specimen.

Large Black Tourmaline Specimen


Code: tbkm581
Naturally terminated black tourmaline weighing 3.3 Lbs
This unique black tourmaline crystal measures 4.8" tall x 3.6" x 3.1"
Genuine black tourmaline specimen discovered by native miners in Brazil
Price: $415.00
This large naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good condition with some minor abrasions. See a side view of this large black tourmaline specimen.

Large Black Tourmaline Crystal


Code: tbkm522
Naturally terminated black tourmaline weighing 3.7 Lbs
Unique black tourmaline mineral specimen measures 4.1" x 3.7" x 4" tall
Genuine black tourmaline specimen discovered by native miners in Brazil
Price: $465.00
This large naturally terminated crystal of natural black tourmaline has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good condition with some minor abrasions. See a side view of this large black tourmaline crystal.

Large Black Tourmaline Crystal


Code: tbkm557
Naturally terminated black tourmaline weighing 3.8 Lbs
This unique black tourmaline crystal measures 4" x 3.7" x 3.5"
Genuine black tourmaline specimen discovered by native miners in Brazil
Price: $485.00
This large naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good condition with some minor abrasions.

Large Black Tourmaline Crystal


Code: tbkm636
Naturally terminated black tourmaline weighing 4.4 Lbs
This unique black tourmaline crystal measures 4.6" x 4.2" x 4"
Genuine black tourmaline specimen discovered by native miners in Brazil
Price: $545.00
All surfaces of this black tourmaline are completely natural - exactly how it formed within the earth. This large naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in mostly very good condition with some abraded areas. This unique black tourmaline crystal has some smaller intergrown black tourmalines in one area as shown in the close-up photo at left. See a full view of this large black tourmaline crystal. See a side view of this one-of-a-kind large black tourmaline crystal. See also a different side view of this unique large black tourmaline crystal.

Large Black Tourmaline Specimen


Code: tbkm637
Naturally terminated black tourmaline weighing 5.3 Lbs
This unique black tourmaline crystal measures 5.1" x 4.7" x 3.8"
Genuine black tourmaline specimen discovered by native miners in Brazil
Price: $685.00
All surfaces of this black tourmaline are completely natural - exactly how it formed within the earth. This large naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in mostly very good condition with some abraded areas. This unique black tourmaline crystal shows very interesting black tourmaline overgrowth features at the lower portion of the prismatic faces. See a view showing the natural overgrowths on this large black tourmaline mineral specimen. See also a different side view of this one-of-a-kind large black tourmaline specimen.

Large Black Tourmaline Decorator Crystal


Code: tbkm638
Naturally terminated black tourmaline weighing 6.1 Lbs
This unique black tourmaline crystal measures 5.7" x 4.4" x 4"
Genuine black tourmaline specimen discovered by native miners in Brazil
Price: $835.00
All surfaces of this black tourmaline are completely natural - exactly how it formed within the earth. This large naturally terminated black tourmaline crystal has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in mostly very good condition with some abraded areas. See a side view of this naturally terminated large black tourmaline decorator mineral specimen. See also a different side view of this unique large black tourmaline decorator crystal.

Large Black Tourmaline Decorator Crystal


Code: tbkm639
Naturally terminated black tourmaline weighing 6.3 Lbs
This unique black tourmaline crystal measures 5.5" x 4.7" x 4.2"
Genuine black tourmaline specimen discovered by native miners in Brazil
Price: $865.00
All surfaces of this black tourmaline are completely natural - exactly how it formed within the earth. This is a large naturally terminated black tourmaline crystal with trigonal prismatic form and with well-developed second-order hexagonal prismatic faces. The prismatic faces and the terminations of this natural black tourmaline specimen are in mostly very good condition with some abraded areas. See a side view of this naturally terminated large black tourmaline decorator crystal specimen. See also a different side view of this unique large black tourmaline decorator specimen. See an additional view of this naturally terminated large black tourmaline decorator crystal.

Large Terminated Black Tourmaline Crystal


Code: tbkm620
Natural black tourmaline specimen weighing 7.6 Lbs
Black Tourmaline Dimensions: 7" tall x 4.4" x 3.9"
This unique black tourmaline was discovered by garimperos in Brazil
Price: $1125.00
This naturally terminated crystal of black tourmaline has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition with some minor abraded areas. See an above view of this rare size collector quality large black tourmaline crystal. See also another side view of this unique large black tourmaline crystal.

Black Tourmalines in Matrix Decorator Specimen


Code: tbkm586
This black tourmaline in matrix specimen weighs 8.5 pounds
Natural black tourmaline specimen dimensions: 7.3" tall x 7.2" wide x 4.2" deep
Discovered by garimperos (native miners) in Minas Gerais, Brazil
Price: $246.25
This unique decorator specimen stands up in the position shown. It is a natural pegmatite specimen with a matrix composed of translucent gray quartz and some beige albite with clay minerals and muscovite mica. This natural matrix mineral specimen has a few dozen large black tourmalines embedded in its surfaces and passing all through the matrix! See also an opposite side view of this black tourmaline crystals in matrix decorator specimen.

Large Black Tourmalines in Matrix Decorator Specimen


Code: tbkm560
This black tourmaline in matrix specimen weighs 9.8 pounds
Natural black tourmaline specimen dimensions: 9" x 8" x 3.2"
Discovered by native miners in Minas Gerais, Brazil
Price: $284.25
This natural pegmatite matrix specimen has a matrix composed of translucent quartz with some white albite, clay minerals, and mica. This matrix specimen has hundreds of black tourmalines embedded in its surfaces and passing all through the matrix! See also an opposite side view of this spectacular decorator specimen of black tourmaline crystals in matrix.

23.1 pound Decorator Specimen of Black Tourmalines in Matrix


Code: tbkm542
This black tourmaline in matrix specimen weighs 23.1 pounds
Natural black tourmaline specimen dimensions: 10.5" x 8.5" x 8"
Found by tourmaline miners in Minas Gerais, Brazil
Price: $577.50
This natural decorator mineral specimen has a matrix of translucent quartz with feldspar, clay minerals, and mica. This one-of-a-kind pegmatite matrix specimen has over a hundred black tourmalines intergrown with the matrix.

Large Decorator Specimen of Black Tourmalines in Matrix


Code: tbkm541
This black tourmaline in matrix specimen weighs 24.9 pounds
Natural black tourmaline specimen dimensions: 12" x 7.5" x 6.5"
Discovered by native miners in Minas Gerais, Brazil
Price: $625.00
This natural decorator mineral specimen has a matrix of translucent quartz with some feldspar, clay minerals, and mica. This pegmatite matrix specimen has hundreds of black tourmalines embedded in its surfaces and passing all through the matrix. See also an opposite side view of this spectacularlarge black tourmaline in quartz decorator specimen.

Large Decorator Specimen of Black Tourmalines in Matrix


Code: tbkm537
This black tourmaline in matrix specimen weighs 26.5 pounds
Natural black tourmaline specimen dimensions: 11" x 9" x 5"
Discovered by native miners in Minas Gerais, Brazil
Price: $662.50
This natural decorator mineral specimen has a matrix composed of translucent quartz with some feldspar, clay minerals, and mica. This pegmatite matrix specimen has hundreds of black tourmalines embedded in its surfaces and passing all through the matrix. This beautiful decorator specimen stands up in the position shown. See a side view of these black tourmalines in matrix. See also an opposite side view of this natural decorator specimen of black tourmalines in matrix.

Large Decorator Specimen of Black Tourmalines in Matrix


Code: tbkm539
This black tourmaline in matrix specimen weighs 42.2 pounds
Natural black tourmaline specimen dimensions: 15" x 9" x 7.5"
Found by tourmaline miners in Minas Gerais, Brazil
Price: $1055.00
This natural decorator mineral specimen has a matrix of translucent quartz with feldspar, clay minerals, and mica. This pegmatite matrix specimen has hundreds of black tourmalines intergrown with the matrix. See also a different view of this beautiful decorator specimen of black tourmalines in quartz matrix.

Polished Black Tourmaline Pieces

Code: tbkm227x
we have these black tourmaline pieces available in assorted sizes from 1" to 2.5" long
Handcrafted from natural black tourmaline mined in Brazil
These polished black tourmaline pieces were tumble polished from 100% natural black tourmaline crystals that were mined in Minas Gerais, Brazil. These rounded & polished pieces of black tourmaline are very popular for metaphysical purposes, and they fit comfortably in your hand, pocket, or purse. These black tourmaline polished pieces are very inexpensive, and they also are very convenient for placing around computer work stations, etc.. as protection against electro-magnetic energies. We have these large size tumbled black tourmaline pieces available at specially discounted volume prices. Please see below for prices, quantities, and ordering.
1.0 inch to 1.4 inch Polished Black Tourmalines

Code: tbkm227a
Price: $2.25 each
Minimum Order: 6 pieces

1.5 inch to 1.9 inch Polished Black Tourmalines

Code: tbkm227b
Price: $3.25 each
Minimum Order: 6 pieces

2.0 inch to 2.5 inch Polished Black Tourmalines

Code: tbkm227c
Price: $4.95 each
Minimum Order: 4 pieces


Small Bi-Terminated Black Tourmaline Crystals

Code: tbkm186x
These genuine black tourmaline crystals were mined in Brazil
These naturally terminated black tourmaline crystals have trigonal prismatic form and natural terminations on each end (known as bi-terminated or double-terminated). The terminations of these small black tourmalines are in good condition overall, with some abrasions. Their small size makes them perfect for metaphysical uses and for feng shui, and they also are very nice as mineral specimens. Each of these black tourmaline crystals has all natural prismatic faces and terminations. We have 3 sizes of these small double-terminated black tourmaline crystals available: 1 inch, 1.25 inches, and 1.5 inches (sizes are approximate). Please see below to order.
1 inch Black Tourmaline Bi-Term. Crystals

Code: tbkm186a
Price: $12.95 each

1.25 inch Black Tourmaline Bi-Term. Crystals

Code: tbkm186b
Price: $16.95 each

1.5 inch Black Tourmaline Bi-Term. Crystals

Code: tbkm186c
Price: $21.95 each


Small Black Tourmaline Crystals

Code: tbkm158x
These naturally terminated black tourmaline crystals were mined in Brazil. Their small size makes them perfect for metaphysical uses, and they also are very nice as natural black tourmaline mineral specimens. Each crystal has natural prismatic faces and some terminations. We have two sizes of these small black tourmaline crystals available at specially discounted volume prices: 1.1" diameter, 1.3" diameter, and 1.5" diameter (sizes are approximate). Please see below to order.
1.1 inch diam. Black Tourmaline Crystals

Code: tbkm158g
Price: $8.95 each
Minimum Order: 3 pieces

1.3 inch diam. Black Tourmaline Crystals

Code: tbkm158j
Price: $12.95 each
Minimum Order: 3 pieces

1.5 inch diam. Black Tourmaline Crystals

Code: tbkm158m
Price: $16.95 each
Minimum Order: 3 pieces


Black Tourmaline Sphere, 1.9 inch


Code: tbks161a
1.9" diameter
Handcrafted from a natural black tourmaline crystal mined in Brazil
Price: $111.50
This black tourmaline sphere was sawn and polished from a single tourmaline crystal that was mined in Minas Gerais, Brazil.

Black Tourmaline Sphere, 2.1 inch


Code: tbks162
Black Tourmaline Sphere Measurement: 2.1" in diameter
Handcrafted from a natural black tourmaline crystal mined in Brazil
Price: $178.50
This 2.1 inch diameter sphere of natural black tourmaline was sawn and polished from a single black tourmaline crystal that was mined in Minas Gerais, Brazil.

Black Tourmaline Sphere, 2.25 inch

This unique item is sold.
Code: tbks167ae
Black Tourmaline Sphere Diameter: 2.25" diameter
Handcrafted from a natural black tourmaline crystal mined in Brazil
Price: $225.00
This 2.25 inch black tourmaline sphere was sawn and polished from a single tourmaline crystal that was mined in Minas Gerais, Brazil.
 


Black Tourmaline Jewelry




Code: tbkj234xai_black-tourmaline-jewelry
Genuine black tourmaline necklace with an adjustable length from 17.5" to 18.5" long, beads are gradational from 5mm up to 9mm in the center of the necklace
Faceted from natural black tourmaline crystals found in Brazil
Price: $114.95
This beautiful necklace of natural black tourmaline faceted beads was hand-crafted from 100% natural black tourmaline crystals that were found in Brazil. These opaque tourmalines were shaped into rounded, disk shaped beads which were then faceted & polished, drilled and strung into this black tourmaline necklace with an adjustable length from 17.5 to 18.5 inches long using its sterling silver extender clasp. The photo at left shows a close-up view, see also a full view photo of this faceted bead black tourmaline necklace. These shiny black tourmaline beads sparkle very nicely. These are all untreated natural tourmaline beads with no dyes, no fillers, and no epoxies! They are 100% natural tourmaline beads, and when examined closely they show occasional natural pits & cracks.
We have this faceted bead black tourmaline necklace available with 175 carats of faceted black tourmaline beads that are gradational in size measuring 5mm at the clasp and increasing in diameter on up to 9mm in the center of the necklace.

Tourmaline Bead Bracelet

Code: tbkj233x
These tourmaline bead bracelets are available with 4 different sizes of tourmaline beads (please see below)
Handcrafted from natural tourmaline crystals mined in Brazil
These genuine tourmaline bead bracelets are strung with natural tourmaline beads on an elastic band fitting all wrist sizes up to size 7 1/2. Most of these genuine tourmaline beads are so dark that they are actually black tourmalines, while a few are a very dark green or dark brown. These are all untreated natural color tourmaline beads with no dyes, no fillers, and no epoxies! They are 100% natural tourmaline beads, and when examined closely they show natural pits & cracks. See a close-up photo of these black tourmaline beads with occasional flat spots on their surfaces, and there are occasional small inclusions of other minerals within the tourmaline. The beads in these genuine tourmaline bracelets were hand-ground & polished from natural tourmalines mined in Brazil.
We have these genuine tourmaline bead bracelets available in four approximate bead diameter sizes, please see below to order.

Code: tbkj233aa
Price: $21.95 each


Code: tbkj233a
Price: $26.95 each


Code: tbkj233ae
Price: $31.95 each


Code: tbkj233i
Price: $48.95 each


Bracelet of Natural Black Tourmalines

Code: tbkj210x
these black tourmaline bracelets are available with 2 sizes of tourmaline crystals (please see below)
These genuine black tourmaline bracelets are strung with completely natural black tourmalines on an elastic band fitting all wrist sizes up to size 8. Some of the black tourmalines are small crystal sections and others are naturally terminated crystals (all have completely natural unpolished surfaces). Many of these small black tourmaline crystals are bi-terminated! These black tourmaline pieces and crystals are in mostly good condition with some broken surfaces. They were mined in Brazil.
We have these genuine black tourmaline bracelets available in two approximate sizes, please see below to order.

Code: tbkj210e
Price: $31.95 each


Code: tbkj210i
Price: $38.95 each




Code: tbkj242
Each of these natural tourmaline earrings is 1.1 inches long
Handcrafted from natural black tourmaline crystals mined in Brazil
Price: $28.95 (for the pair)
This pair of superior quality black tourmaline earrings was hand-crafted from 100% natural black tourmaline crystals that were found in Brazil. These opaque tourmalines were handcrafted into 14mm long x 8mm wide flattened drop shaped gems with polished facets on all surfaces, and then drilled at the top and attached to the sterling silver dangles. These shiny black tourmaline gems reflect light from their facets and sparkle very nicely. These are untreated natural black tourmaline gems with no dyes, no fillers, and no epoxies!



Code: tbkj212x
Price: $14.95
Natural black tourmaline pieces from Brazil were tumbled and polished in baroque shapes, and then drilled and strung in this 18 inch black tourmaline necklace with a sterling silver clasp. There are approximately 180 drilled baroque shape beads in each of these genuine black tourmaline necklaces! The photo at left shows a full view. These untreated black tourmaline necklaces are completely natural, and they make wonderful gifts!



Code: tbkj161x
Price: $16.95
Natural black tourmaline pieces from Brazil were tumbled and polished in baroque shapes, and then drilled and strung in this 34" (87mm) "endless" black tourmaline necklace. There are approximately 300 drilled baroque shape beads in each of these genuine black tourmaline necklaces! The photo at left shows a close-up view. See also a full view. These untreated black tourmaline necklaces are completely natural, and they make wonderful gifts!

Polished Black Tourmaline Crystal Pendants

Code: tbkj243x
Each of these polished black tourmaline crystal pendants is set with a handcrafted 925 sterling silver bezel cap. We have them available with crystal sizes measuring approximately 1.2 inches long for $21.95 each (item tbkj243n), and an extra large size with 1.4 inch long crystals for $26.95 each (item tbkj243e).

They are sold individually (please see below).


Code: tbkj243n
Price: $21.95


Code: tbkj243e
Price: $26.95




Code: tbkj244
Ring Size 6
This tourmalinated quartz crystal gem was mined in Brazil
Price: $68.50
This unique ring was handcrafted in sterling silver and set with a 12mm square shape cabochon gem of natural tourmalinated quartz crystal. This lightly included natural quartz crystal cab has excellent transparency with slender black tourmaline crystals passing through it (known as tourmalinated quartz crystal).



Code: tbkj246
Ring Size 6
This tourmalinated quartz crystal gem was mined in Brazil
Price: $71.50
This unique ring was handcrafted in sterling silver and set with a 13mm round shape cabochon gem of natural tourmalinated quartz crystal. This lightly included natural quartz crystal cab has excellent transparency with slender black tourmaline crystals passing through it (known as tourmalinated quartz crystal).



Code: tbkj245
Ring Size 7
This tourmalinated quartz crystal gem was mined in Brazil
Price: $74.50
This unique ring was handcrafted in sterling silver and set with a 15x13mm oval shape cabochon gem of natural tourmalinated quartz crystal. This lightly included natural quartz crystal cab has excellent transparency with slender black tourmaline crystals passing through it (known as tourmalinated quartz crystal).



Code: tbkj247
Ring Size 7
This tourmalinated quartz crystal gem was mined in Brazil
Price: $88.50
This unique ring was handcrafted in sterling silver with a wide band and set with a 21x9mm leaf shape cabochon gem of natural tourmalinated quartz crystal. This lightly included natural quartz crystal cab has excellent transparency with slender black tourmaline crystals passing through it (known as tourmalinated quartz crystal).



Code: tbkj254
Natural quartz crystal with black tourmaline pendant measures 1.3" long x 0.6" wide
This tourmalinated quartz crystal was mined in Brazil
Price: $68.95
This unique black tourmaline pendant was handcrafted in 925 sterling silver and set with a 19x12mm marquis shape cabochon gem of natural quartz crystal with slender black tourmaline crystals passing thru the quartz. This tourmalinated quartz crystal is 100% natural with no treatments of any kind. The lightly included natural quartz crystal cabochon is bezel set with an open back.



Code: tbkj120
1.75 inches long x 0.9 inches wide (45mm x 23mm)
this tourmalinated quartz crystal cab was mined in Brazil
Price: $78.50
This unique black tourmaline pendant was handcrafted in sterling silver and set with a 23x17mm triangular shaped cabochon gem of natural tourmalinated quartz crystal. This lightly included natural quartz crystal cab has excellent transparency with slender black tourmaline crystals passing through it (known as tourmalinated quartz crystal).



Code: tbkj203
1.5" x 0.9" (39x24mm)
this tourmalinated quartz crystal gem was mined in Brazil
Price: $81.50
This unique pendant was handcrafted in sterling silver and set with a 21mm round shaped cabochon gem of natural tourmalinated quartz crystal. The lightly included natural quartz crystal cabochon has slender black tourmaline crystals passing through it (known as tourmalinated quartz crystal).



Code: tbkj164
1.7" x 0.8"
(43.5 x 21mm)
this tourmalinated quartz crystal was mined in Brazil
Price: $98.50
This unique black tourmaline pendant was handcrafted in sterling silver and set with a beautiful diamond shape cabochon gem of natural tourmalinated quartz crystal measuring 29x19mm. The lightly included natural quartz crystal cabochon has slender black tourmaline crystals passing through it (known as tourmalinated quartz crystal).



Code: tbkj250
Natural quartz crystal with tourmaline pendant measures 1.7" x 0.8"
This black tourmaline in quartz crystal cabochon was mined in Brazil
Price: $94.50
This unique black tourmaline pendant was handcrafted in 925 sterling silver and set with a unique 26x19mm pear shape cabochon gem of natural quartz crystal with slender black tourmaline crystals passing thru the quartz! This tourmalinated quartz crystal is 100% natural with no treatments of any kind. The lightly included natural quartz crystal cabochon is bezel set with an open back.



Code: tbkj248
Natural quartz crystal with tourmaline pendant measures 2" x 0.85"
(50 x 21.5mm)
This tourmalinated quartz crystal was mined in Brazil
Price: $112.50
This unique black tourmaline pendant was handcrafted in 925 sterling silver and set with a unique cabochon gem measuring 34x19mm of natural quartz crystal with slender black tourmaline crystals passing thru the quartz! This tourmalinated quartz crystal is 100% natural with no treatments of any kind. The lightly included natural quartz crystal cabochon is bezel set with an open back.



Code: tbkj253
Natural quartz crystal with tourmaline pendant measures 1.9" x 1.1"
(48 x 28mm)
This tourmalinated quartz crystal was mined in Brazil
Price: $121.95
This unique black tourmaline pendant was handcrafted in 925 sterling silver and set with a large cabochon gem measuring 33x27mm of natural quartz crystal with slender black tourmaline crystals passing thru the quartz! This tourmalinated quartz crystal is 100% natural with no treatments of any kind. The lightly included natural quartz crystal cabochon is bezel set with an open back.



Code: tbkj251
Natural quartz crystal pendant measures 1.9" long x 0.8" wide
These quartz crystal gems were mined in Brazil
Price: $121.95
This black tourmaline in quartz multi-gem pendant was handcrafted in 925 sterling silver with open backs and bezel set with a 7mm round faceted gem of clear natural quartz crystal and with a 25x19mm pear shape gem of natural tourmalinated quartz crystal. The lightly included tourmalinated quartz crystal cab has many slender black tourmaline crystals passing thru the colorless quartz crystal! Both of these beautiful gems are 100% natural with no treatments of any kind.



Code: tbkj252
Pendant measures 2" long x 0.8" wide
Tourmalinated quartz crystal gem & topaz were mined in Brazil
Price: $118.95
This black tourmaline in quartz multi-gem pendant was handcrafted in 925 sterling silver with open backs and bezel set with an 8x6mm oval faceted gem of sky blue topaz and with a 22x14mm pear shape gem of natural tourmalinated quartz crystal. The lightly included tourmalinated quartz crystal cab has many slender black tourmaline crystals passing thru the colorless quartz crystal!



Code: tbkj249
Natural quartz crystal pendant measures 2.25" long x 1" wide
These quartz crystal with black tourmaline cabs were mined in Brazil
Price: $154.25
This black tourmaline in quartz multi-gem pendant was handcrafted in 925 sterling silver with open backs and bezel set with three cabochon gems of natural quartz crystal. At the top is a 14x10mm cabochon gem of clear natural quartz crystal. The center gem is an oval shape 20x15mm cab of natural tourmalinated quartz crystal, and at the bottom is a pear shape 11x8mm natural tourmalinated quartz crystal cabochon gem. The lightly included tourmalinated quartz crystal cabs have slender black tourmaline crystals passing thru the colorless quartz crystal! Theyse gems are all 100% natural with no treatments of any kind!



Code: tbkj232
This black tourmaline necklace has an adjustable length up to 18 inches long
These genuine tourmalinated quartz crystal gems were mined in Brazil
Price: $398.25
This beautiful and unique black tourmaline necklace was handcrafted in 925 sterling silver and set with seven cabochon gems of natural tourmalinated quartz crystal ranging in sizes from 19x13mm up to 26x18mm. These lightly included natural quartz crystal cabs have slender black tourmaline crystals passing through them (known as tourmalinated quartz crystal). The photo at left shows a close-up view. See also a full view of this handcrafted black tourmaline necklace.



Code: tbkj256
Black tourmaline bracelet with an adjustable length from 7" to 8.5" long
The tourmalinated quartz crystal gems in this bracelet were mined in Brazil
Price: $361.25
This unique black tourmaline bracelet was handcrafted in 925 sterling silver with open back settings and set with six cabochon gems of natural quartz crystal with slender black tourmalines passing through the transparent quartz crystal. These beautiful tourmalinated quartz crystal cabochons measure from 26x10mm up to 27x19mm. The photo at left shows a close-up view. See also a full view of this handcrafted black tourmaline bracelet.



Code: tbkj255
Black tourmaline bracelet with an adjustable length from 7" to 8.5" long
The tourmalinated quartz crystal gems in this bracelet were mined in Brazil
Price: $264.25
This unique black tourmaline bracelet was handcrafted in 925 sterling silver with open back settings and set with seven beautiful cabochon gems of natural quartz crystal with slender black tourmalines passing through the transparent quartz crystal. These superior grade tourmalinated quartz crystal cabochons measure from 16x12mm up to 19x15mm. The photo at left shows a close-up view. See also a full view of this handcrafted black tourmaline bracelet.



Code: tbkj147
this natural black tourmaline pendant is 1.8 inches long x 0.9 inches wide (46mm x 24mm)
this tourmalinated quartz crystal gem was mined in Brazil
Price: $98.25
This unique black tourmaline in quartz pendant was handcrafted in sterling silver and set with a 19x14mm faceted gemstone of natural tourmalinated quartz crystal. This lightly included natural quartz crystal gemstone has several slender black tourmaline crystals passing through it (known as tourmalinated quartz crystal).
 


Our Black Tourmalines are completely Natural - they have not been heated or treated in any way!

Black Tourmaline Information

Mineral Specimen of Black Tourmaline Crystals in Quartz Matrix Black Tourmaline Crystals

Natural Black Tourmaline

We specialize in unheated and untreated real black tourmaline that was mined in the earth! Black tourmaline crystals are mined today at many locations worldwide. These natural black tourmalines are mainly used for metaphysical purposes, however black tourmaline does also have some very interesting scientific uses as well. Black Tourmaline is naturally pyroelectric, which means that a black tourmaline can produce an electrical charge when it is subjected to a change in temperature.

A piezoelectric current can also be generated when pressure is applied to a natural black tourmaline.

Metaphysical sources say that black tourmaline can defend against negative energies, and that it gives protection against negativity from other people as well as protection against negative energy from both electrical fields & magnetic fields.

Right now, we are offering natural raw black tourmaline pieces and crystals in all sizes including some very rare large black tourmaline decorator mineral specimens & large black tourmaline crystals!

Be sure to also see also our online selection of black tourmaline necklaces and jewelry that were handcrafted from natural black tourmaline crystals! See also our black tourmaline bracelets strung with naturally terminated black tourmaline crystals.

Black tourmaline forms in many different geologic settings. It most often occurs in granite pegmatites. Tourmalines found in pegmatites are commonly black and they are associated with the feldspar varieties albite and microcline, along with quartz and muscovite. The light colored gem tourmalines are much more rare, usually occuring in pegmatite core zones with quartz (sometimes as smoky quartz crystals), cleavelandite mineral specimens, and muscovite (sometimes as the lithium rich variety lepidolite), and more rarely with amblygonite and spodumene (variety: kunzite).

Other geologic occurances for black tourmaline are: with quartz in hydrothermal veins where heated mineral bearing liquids or gases from deep igneous sources later cooled and crystallized along rock fractures, by boron metasomatism in contact and regionally metamorphosed rocks, and black tourmaline also forms in granites due to late stage alteration of micas and feldspars by boron containing fluids.

Tourmaline

Tourmaline is the name of a group of closely related minerals all having essentially the same crystal structure but varying considerably in chemical composition and in some of their physical properties. Tourmaline is best described as a very complex aluminum borosilicate.

There are eleven distinct tourmaline mineral species based on chemical composition: buergerite, chromdravite, dravite, elbaite, feruvite, foitite, liddicoatite, olenite, povondraite, schorl and uvite.

Tourmaline occurs in all colors! Commonly used names have been given to tourmalines of specific colors or color combinations such as indicolite for blue tourmaline, rubellite tourmaline for pink to red shades, and watermelon tourmaline for tourmalines showing concentric color zoning with pink-red cores surrounded by green. Because laboratory analysis is necessary to determine the precise chemical composition of a tourmaline, the generally preferred nomenclature today for tourmalines that have not been lab analysed is simply to use the color of the tourmaline specimen as a prefix followed by tourmaline as in green tourmaline.

The color in tourmaline is due to the presence of metal ions (Fe, Mn, Cr, V, Ti and Cu) in the tourmaline crystal structure. The color we see in tourmalines is the result of light being absorbed by these ions or by interactions between these ions.

To see photos of natural tourmaline products, simply select one of the links below. These pages take longer to load as they display for all varieties of tourmaline.