Boulder Opal Gemstones, Welo Opal Gems, and Cats Eye Opal Gemstones
Natural Opal Gemstones and other Genuine Opal items in our Virtual Gallery

The mineralminers.com® Virtual Gallery - Collector Quality Opal Gemstones At Miners' Prices!TM

Boulder Opal Gems, Welo Opal Gemstones, and other Natural Opal Gems

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Welo Opal Gemstone


Item: opag144_Welo-crystal-opal-gemstone
This natural opal gemstone weighs 0.95 carats
Welo Opal Gem Dimensions: 11.4mm x 7.0mm x 3.4mm deep
This natural precious opal gem was found in the Welo Province of Ethiopia
Price: $85.50
This unique Welo opal gemstone was ground & polished into a pear shaped cabochon from natural crystal opal rough that was mined in Ethiopia. This opal gem is completely natural with no dyes, no glues, no laminations, and no treatments of any kind. This superior quality opal gem is flawless with no imperfections. It is transparent with natural color play inside. Transparent opals with color play are also known as crystal opal gems. This fine quality Welo opal gemstone has flashes of green, orange and red color play inside!
The fine opal gemstone you see displayed at left is the actual one you will receive.

Ethiopian Welo Opal Gemstone


Item: opag146_Welo-crystal-opal-gemstone
This natural opal gemstone weighs 3.06 carats
Ethiopian Crystal Opal Gem Dimensions: 10.2mm round x 6.5mm deep
This natural precious opal gem was found in the Welo Province of Ethiopia
Price: $328.95
This unique Welo opal gemstone was ground & polished into a round cabochon shape from natural crystal opal rough that was mined in Ethiopia. This opal gem is completely natural with no dyes, no glues, no laminations, and no treatments of any kind. This superior quality opal gem is flawless with no imperfections. It is transparent with natural color play inside. Transparent opals with color play are also known as crystal opal gems. This fine quality Welo opal gemstone has flashes of wonderful green with some red color play inside as you turn the gem. See another view of this superior quality natural Welo opal gemstone.
The fine opal gemstone you see in these two photos is the actual one you will receive.

Welo Opal Gemstone


Item: opag147_Welo-crystal-opal-gemstone
This natural opal gemstone weighs 3.06 carats
Crystal Opal Gem Dimensions: 14.8mm x 9.8mm x 5.0mm deep
This natural precious opal gem was found in the Welo Province of Ethiopia
Price: $492.75
This unique Welo opal gemstone was ground & polished into an oval cabochon shape from natural crystal opal rough that was mined in Ethiopia. This opal gem is completely natural with no dyes, no glues, no laminations, and no treatments of any kind. This superior quality opal gem is flawless with no imperfections. It is transparent with natural color play inside. Transparent opals with color play are also known as crystal opal gems. This fine quality Welo opal gemstone has flashes of wonderful green, orange and red color play inside as you turn the gem. See another view of this superior quality natural Ethiopian opal gemstone.
The fine opal gemstone you see in these two photos is the actual one you will receive.

Boulder Opal Gemstone


Item: opag150_boulder-opal-gemstone
This natural boulder opal gem weighs 31.02 carats
Boulder Opal Gem Dimensions: 1.1 x 0.7 x 0.3 thick
(28mm x 16.5mm x 8mm)
Price: $122.50
This unique boulder opal gemstone was ground & polished into a free-form cabochon shape from natural boulder opal rough that was mined in Australia. This boulder opal gem is completely natural with no dyes, glues, laminations or fillers. There is lots of opal in this gem, the opal is intergrown with dark brown clay-ironstone matrix, and within the opal there are areas with beautiful green and blue-purple colors as you turn the piece. It makes a great specimen of natural Australian boulder opal just as it is, although this genuine boulder opal gem would make a wonderful boulder opal jewelry design as well.

Ex-Large Boulder Opal Gemstone, 197.42 carats!


Item: opag142 _boulder-opal-gemstone
This genuine boulder opal gem weighs 197.42 carats
Boulder Opal Gem Dimensions: 2.4 x 1.7 x 0.3 thick
(62mm x 44mm x 8mm)
Price: $241.25
This unique boulder opal gemstone was ground & polished into a free-form cabochon shape from natural boulder opal rough that was mined in Australia. This boulder opal specimen has a relatively thin flat shape. It is completely natural with no dyes, glues, laminations or fillers. The boulder opal has a dark brown clay-ironstone matrix, and within the opal there are areas with intense green and blue-purple flashes as you turn the piece. It makes a great specimen of natural Australian boulder opal just as it is, although ths genuine boulder opal gem would make a wonderful boulder opal gemstone jewelry design as well. See also a full-view photo and a back-view photo.

Precious Opal Shell Fossil


Item: opag132
43.25 carats
34 X 30 X 11 mm
Mined in Australia
Price: $280.00
This genuine opal fossil clam mined in Australia contains multicolors of crystal opal in predominately greens, blue through violet, to purple colors within a slightly bluish body color. The precious opal shell thickness is from 2 MM to over 5 MM thick covering a sandstone center. It is an excellent specimen as is but could be polished to bring out the colors even more.

Brazilian Precious Opal Pear Shape


Item: opag151
Genuine Brazilian opal cabochon gem weighing 11.62 carats
Opal Gemstone Dimensions: 28 X 16 X 4 mm
Mined in Brazil
Price: $313.74
This genuine solid crystal opal mined in Brazil contains multi-colors of crystal opal in predominately greens and blues through violet, to purple colors within a translucent, slightly blue-ish body color. The precious opal is fashioned in a double cab style with some variance of color play from side to side. See also another view of this genuine Brazilian opal gemstone. Brazilian opal is said to contain less water and is even more stable than Australian opal.

Brazilian Precious Opal Low Dome Cushion Shape


Item: opag152
4.94 carats
14.3X 111.5X 4.1 mm
Mined in Pedro II Piaui , Brazil
Price: $258.44
This genuine solid crystal opal mined in Brazil contains multicolors of semi crystal opal in predominately greens and blues through violet, to purple colors with small amounts of yellow and orange within a transparent to translucent, slightly milky white body color. The precious opal is fashioned in a double cab style with some variance of color play from side to side. See also another view Brazilian opal gemstone. See also another view photo.Brazilian opal is said to contain less water and is even more stable than Australian opal.

Brazilian Precious Opal Low Dome Cushion Shape


Item: opag153
4.05 carats
14.1X 11.9X 2.9 mm
Mined in Pedro II Piaui , Brazil
Price: $222.75
This genuine solid crystal opal mined in Brazil contains multicolors of semi crystal opal in greens and blues through violet, to purple colors with varying amounts of yellows reds and orange within a transparent to translucent, nearly crystal clear body color. The precious opal is fashioned in a double cab style with some variance of color play from side to side. See also opposite side view photo. Brazilian opal is said to contain less water and is even more stable than Australian opal.

Brazilian Precious Opal Low Dome Oval Shape


Item: opag154
3.80 carats
13.0X 10.5X 3.5mm
Mined in Pedro II Piaui , Brazil
Price: $209.00
This genuine solid crystal opal mined in Brazil contains multicolors of semi crystal opal in greens and blues through violet, to purple colors with minor amounts of yellows reds and orange within a transparent to translucent, nearly crystal clear body color. The precious opal is fashioned in an oval cab style with variance of color play at different angles. See also another view photo. See also another view photo. Brazilian opal is said to contain less water and is even more stable than Australian opal.

Brazilian Precious Opal Low Dome Near Square Shape


Item: opag155
3.62 carats
11.0X 11.2X 3.6mm
Mined in Pedro II Piaui , Brazil
Price: $188.24
This genuine solid crystal opal mined in Brazil contains multicolors of semi crystal opal in greens and blues through violet, to purple colors with minor amounts of yellows reds and orange within a transparent to translucent, nearly crystal clear body color. The precious opal is fashioned in near square cushion shape double sided cab style with variance of color play on each side at different angles. See also another view photo. See also another view photo with florescent lighting. See also another view photo. Brazilian opal is said to contain less water and is even more stable than Australian opal.

Australian Natural Solid Dark Crystal Opal Cabchon


Item: opag156
11.76 carats
22.7X 17 X 4.5 mm oval cab
Mined at Coober Pedy, Australia
Price: $964.32
This beautiful, genuine dark crystal opal cabochon gem mined in Australia is very nicely fashioned and polished. It has a translucent body color of a light tan with a beautiful,multi-color, pin-fire pattern throughout the gem. The specks and flashes of color penetrate right through to most of the back side. This is a solid opal, not a doublet. See also another view photo. See also another view photo. The photographs shown were taken under a combination of florescent and incandescent (bulb) light.

Mexican Fire Opal Cabchon 2.10 carats


Item: opag157
2.10 carats
10.0 X 8.2. X 4.6 mm oval cab
Mined in Mexico
Price: $168.00
This is a gorgeous deep orange natural color Mexican fire opal with some play of color in various tones of yellows, orange and greens. This gem is completely eye-clean and is well fashioned. It is a nice sized gem at 2.10 carats and is fashioned out of facet grade material. See also another view photo. The photo was taken under incandescent (bulb) light.

Ethiopian Opal Gem Rough Specimen, 14.71 carats

This unique item is sold.
Item: opal101-ethiopian-opal-rough
This genuine Ethiopian opal rough weighs 14.71 carats
0.85" x 0.6" x 0.55" thick
(21.5mm x 15mm x 14mm)
Mined in Ethiopia
Price: $147.10
This unique piece of genuine Ethiopian opal gem rough is completely natural just as it was found in the earth! Within the opal there are areas with beautiful green, red, yellow and orange broad flashes of color as you turn it. This lapidary grade opal specimen makes a great mineral specimen of natural Ethiopian opal just as it is. This precious opal rough specimen could also be set into jewelry just as it is to make a wonderful Ethiopian opal jewelry item as well. This genuine Ethiopian opal rough specimen has not been heated or treated in any way. There is some matrix and internal cracks & inclusions inside with a large completely clean area and some smaller clean areas that could be cut into 3 carats of completely clean fine quality Ethiopian opal gemstones! See also an opposite side view.

Ethiopian Opal Gem Rough Specimen, 24.52 carats


Item: opal104-ethiopian-opal-rough
this genuine Ethiopian opal rough weighs 24.52 carats
1.1" x 1" x 0.55" thick
(28mm x 25.5mm x 14mm)
mined in Ethiopia
Price: $148.08
This unique piece of genuine Ethiopian opal gem rough is completely natural, just as it was found in the earth! Within the opal there is very beautiful color-play in flashes of green, yellow, red and orange colors as you turn it. The photo at left was taken under incandescent light. It shows an area with a fresh surface break which nicely reveals the color-play inside. The remaining surfaces are mostly covered with a very thin layer of rough opaque opal. This untreated opal specimen makes a great mineral specimen of natural Ethiopian opal just as it is. This precious opal rough specimen could also be set into jewelry just as it is to make a wonderful Ethiopian opal jewelry item as well. There is a little matrix on some surfaces, and there are several large internal cracks inside separating some small but completely clean areas that could be cut into completely clean Ethiopian opal gemstones weighing from 1/2 to one carat each with good color-play. See also a side view photo.

Ethiopian Opal Gem Rough Specimen, 12.56 carats


Item: opal102-ethiopian-opal-rough
this genuine Ethiopian opal rough weighs 12.56 carats
0.8" x 0.6" x 0.4" thick
(20mm x 15mm x 10mm)
mined in Ethiopia
Price: $198.00
This unique piece of untreated Ethiopian opal rough is completely natural just as it was found in the earth. Along one side there is a layer of very high grade opal with beautiful green, red, yellow and orange broad flashes of 100% natural colors. This lapidary grade opal layer would yield a single completely clean fine quality cabochon gem weighing over 4 carats. This genuine Ethiopian opal rough specimen has not been heated or treated in any way. The photo at left nicely shows the high grade opal layer along one side which makes up about 35% of the piece, and the milky opal layer with little to no color-play along the opposite side making up the remaining 65%. There is a very small amount of attached matrix. See also an opposite side view.

Ethiopian Opal Gem Rough Specimen, 11.70 carats


Item: opal106-ethiopian-opal-rough
This genuine Ethiopian opal rough weighs 11.70 carats
0.8" x 0.7" x 0.4" thick
(20mm x 18.5mm x 10mm)
Mined in Ethiopia
Price: $175.50
This untreated specimen of Ethiopian opal is completely natural, just as it was found in the earth. Over 90% of this high quality opal rough is completely clean inside, and the opal is transparent. Under incandescent light or sunlight it shows beautiful flashes of green, yellow and blue 100% natural colors here and there within its depths. Under less strong lighting, the colors are more subtle. These colors change as the light moves or as the piece is turned. This rare quality lapidary grade precious opal specimen would yield a single completely clean Ethiopian opal cabochon gem weighing 3.5 carats, or a completely clean free-form gem carving weighing even more. The photo at left shows a fresh surface break on one side which nicely shows the internal color-play under incandescent light. This beautiful precious opal specimen could be set in jewelry just as it is! There a small amount of matrix on some surfaces. See also a side photo.

Ethiopian Opal Gem Rough Specimen, 14.75 carats

This unique item is sold.
Item: opal105-ethiopian-opal-rough
this genuine Ethiopian opal rough weighs 14.75 carats
1.2" x 0.4" x 0.4" thick
(30mm x 11mm x 10mm)
mined in Ethiopia
Price: $222.00
This untreated Ethiopian opal rough specimen is completely natural, just as it was found in the earth. It is completely clean inside and the opal is transparent with no flaws. Under incandescent light or sunlight it shows beautiful flashes of green, yellow and blue 100% natural colors here and there within its depths. Under less strong lighting, the colors are more subtle. These colors change as the light moves or as the piece is turned. This fine lapidary grade precious opal specimen would yield a single completely clean Ethiopian opal cabochon gem weighing over 5 carats, or a wonderful completely clean free-form gem carving weighing even more! The photo at left was taken under incandescent light. It shows a fresh surface break which nicely reveals the color-play inside. The remaining surfaces are mostly covered with a very thin layer of rough opaque opal. There a small amount of matrix on some surfaces. See also a back side photo.

Ethiopian Opal Gem Rough Specimen, 21.11 carats


Item: opal107-ethiopian-opal-rough
this genuine Ethiopian opal rough weighs 21.11 carats
1.25" x 0.8" x 0.5" thick
(31mm x 19mm x 12.5mm)
mined in Ethiopia
Price: $264.38
This untreated Ethiopian opal rough specimen is completely natural - just as it was found in the earth. The opal has no flaws inside, and in the upper part it has very fine color-play showing beautiful flashes of green, red, and orange natural colors. These colors change as the light moves or as the piece is turned. The lower part of the opal also shows some color-play when viewed under brighter lights. The photo at left was taken under incandescent light. It shows a fresh surface break which nicely reveals the color-play inside. The remaining surfaces are mostly covered with a very thin layer of opaque opal. This lapidary grade precious opal specimen would yield a single completely clean Ethiopian opal cabochon gem weighing 4.5 carats from the very high quality area in the upper part of the opal. This untreated Ethiopian opal specimen would look very nice if set into jewelry just as it is! There a small amount of matrix on the opposite side. See also a side view photo, and a back view photo.

Ethiopian Opal Gem Rough Specimen, 157.1 carats


Item: opal109-ethiopian-opal-rough
this genuine Ethiopian opal rough weighs 157.1 carats
1.5" x 1.3" x 1.1"
(38mm x 33mm x 28mm)
mined in Ethiopia
Price: $1885.20
This amazing specimen of untreated Ethiopian opal rough specimen is completely natural - just as it was found in the earth! This rare quality precious opal specimen has no cracks, and there is a very large flawless area inside weighing over 100 carats with fine color-play showing beautiful flashes of green, red, yellow, and orange natural colors. These wonderful colors change as the light moves or as the piece is turned. The photo at left was taken under incandescent light. It shows a fresh surface break which very nicely reveals the color-play inside. See also another view. Most of the remaining surfaces are covered with a thin layer of opaque opal and matrix. See also a side view photo, and a back view photo. This lapidary grade precious opal specimen makes a wonderful mineral specimen just as it is, although it would yield over 50 carats of completely clean Ethiopian opal cabochon gems with fine color-play! This untreated Ethiopian opal specimen is a spectacular natural opal mineral specimen!

Ethiopian Opal Gem Rough Specimen, 34.0 carats


Item: opal108-ethiopian-opal-rough
this genuine Ethiopian opal rough weighs 34.0 carats
1.1" x 0.8" x 0.8" thick
(28mm x 20mm x 20mm)
mined in Ethiopia
Price: $544.00
This untreated Ethiopian opal rough specimen is completely natural - just as it was found in the earth. There is a large clean area inside weighing over 20 carats with no flaws and with fine color-play showing beautiful flashes of green, red, yellow, and orange natural colors. These colors change as the light moves or as the piece is turned. The photo at left was taken under incandescent light. It shows a fresh surface break which nicely reveals the color-play inside. Most of the remaining surfaces are covered with a very thin layer of opaque opal. This lapidary grade precious opal specimen makes a wonderful mineral specimen just as it is, although it would yield 10-15 carats of completely clean Ethiopian opal cabochon gems with beautiful color-play. This untreated Ethiopian opal specimen would also look very nice if set into jewelry just as it is! There a small amount of matrix on the opposite side. See also a side view photo, and a back view photo.

Natural Boulder Opal Pendant, 26cts

This unique item is sold.
Item: opaj243_boulder-opal-jewelry
Natural boulder opal pendant with an opal gem weighing 26 carats
This genuine boulder opal pendant measures 1.1" long x 0.5" wide
Price: $122.50
This unique boulder opal pendant was ground & polished into a free-form cabochon shape from natural boulder opal rough that was mined in Australia. It was drilled through near the top so that it can be worn as a beautiful boulder opal necklace. We are offering this genuine boulder opal necklace with an 18 inch black leather necklace at no extra charge. If you would prefer a 16 inch black leather necklace (or a 16 inch black rubber necklace) just send an email to us when ordering. Other than being polished and drilled, this boulder opal gem is completely natural with no dyes, glues, laminations or fillers. This natural boulder opal jewelry design has a dark brown clay-ironstone matrix, and within the opal there are areas with beautiful green, yellow and orange flashes as you turn it.

Natural Boulder Opal Pendant, 42.4 carats


Item: opaj242_boulder-opal-jewelry
Natural opal pendant set with a boulder opal gem weighing 42.4 carats
This natural boulder opal pendant measures 1" long x 0.7" wide
Price: $128.50
This genuine boulder opal necklace was ground & polished into a free-form cabochon shape from natural boulder opal rough that was mined in Australia. It was drilled through near the top so that it can be worn as a necklace. We are offering this genuine boulder opal with an 18 inch black leather necklace at no extra charge. If you would prefer a 16 inch black leather necklace (or a 16 inch black rubber necklace) just send an email to us when ordering. Other than being polished and drilled, this boulder opal gem is completely natural with no dyes, glues, laminations or fillers. The boulder opal has a dark brown clay-ironstone matrix, and within the opal there are areas with beautiful yellow, red, green and orange flashes as you turn it.

Natural Boulder Opal Necklace

This unique item is sold.
Item: opaj217
Natural opal pendant set with a boulder opal gem weighing 42.3 carats
This genuine boulder opal pendant is 1.2" long x 0.6" wide x 0.4" thick (30mm x 15mm x 10mm)
Found in Australia
Price: $162.25
This unique boulder opal pendant was ground & polished into a free-form cabochon gem weighing 42.30 carats from natural boulder opal rough that was mined in Australia. It was drilled through near the top so that it can be worn as an opal necklace. We are offering this genuine boulder opal pendant with an 18 inch black leather necklace at no extra charge. If you would prefer an 16 inch black leather necklace (or a 16 inch black rubber necklace) just send an email to us when ordering. Other than being polished and drilled, this boulder opal gem is completely natural with no dyes, glues, laminations or fillers. The boulder opal has a dark brown clay-ironstone matrix, and within the opal there are areas with beautiful blue-violet and green flashes as you turn it.

Natural Boulder Opal Necklace

This unique item is sold.
Item: opaj247_boulder-opal-jewelry
Natural opal pendant set with a boulder opal gem weighing 81.45 carats
This genuine boulder opal pendant measures 1.7" long x 0.7" wide
Price: $178.25
This unique boulder opal necklace was ground & polished into a free-form cabochon gem weighing 81.45 carats from natural boulder opal rough that was mined in Australia. It was drilled through near the top so that it can be worn as a necklace. We are offering this genuine boulder opal necklace with an 18 inch black leather necklace at no extra charge. If you would prefer a 16 inch black leather necklace (or a 16 inch black rubber necklace) just send an email to us when ordering. Other than being polished and drilled, this boulder opal gem is completely natural with no dyes, glues, laminations or fillers. The boulder opal has a dark brown clay-ironstone matrix, and within the opal there are areas with beautiful blue-violet and green flashes as you turn it.

Blue Boulder Opal Necklace


Item: opaj248_boulder-opal-jewelry
Natural Australian opal necklace with opal gem weighing 22.1 carats
This genuine boulder opal pendant measures 1.1" long x 0.6" wide
Price: $182.25
This unique boulder opal pendant was ground & polished in a free-form cabochon shape from natural boulder opal rough that was mined in Australia. It was drilled through near the top so that it can be worn as a boulder opal necklace. We are offering this completely natural boulder opal pendant with an 18 inch black leather necklace at no extra charge. If you would prefer a 16 inch black leather necklace (or a 16 inch black rubber necklace) just send an email to us when ordering. Other than being polished and drilled, this boulder opal gem is completely natural with no dyes, glues, laminations or fillers. This natural boulder opal jewelry design has a dark brown clay-ironstone matrix, and the opal has very beautiful blue and blue-purple natural colors as shown.

Fine Boulder Opal Pendant, 71.36 cts


Item: opaj148_boulder-opal-necklace
Genuine boulder pendant with opal gem weighing 71.36 carats
This natural boulder opal pendant is 1.5" long x 0.7" wide (40mm x 18mm)
Polished from a natural boulder opal found in Australia
Price: $638.25
This fine quality boulder opal pendant was ground & polished into a free-form cabochon shape from natural boulder opal rough that was discovered in Australia. This gem was drilled through near the top so that it can be worn as a boulder opal necklace. We are offering this genuine boulder opal pendant with an 18 inch black leather necklace at no extra charge. See a full-view image of this genuine boulder opal necklace. If you would prefer a 16 inch black leather necklace (or a 16 inch black rubber necklace) just send an email to us when ordering. Other than being polished and drilled, this boulder opal gem is completely natural with no dyes, glues, or laminations. The boulder opal has a dark brown clay-ironstone natural matrix, and within the opal there are areas with intense beautiful green, red and blue flashes as you turn the piece.


Our Opal Gemstones page displays natural Boulder Opal Gemstones, Welo Opal Gemstones, and other Natural Opal Gems.

See also our pages displaying genuine opal jewelry designs including natural jelly opal jewelry, Welo opal earrings, and jelly opal necklaces.

To see more opal photos, just select another item category from the table below. To see photos of another mineral variety, select any item category link in our Mineral Inventory & Factsheet Index.

Additional Opal Items in our Virtual Gallery
OPAL Select any unfollowed link to see more opal photos
Opal
Mineral Specimens

and
Opal Lapidary Rough
Opal
Spheres
Ethiopian Opal
Gem Rough Specimens
Opal
Gems
Genuine Opal Jewelry:
(opal pendants, opal earrings, opal rings, and opal necklaces)
Boulder Opal Jewelry
Mexican Fire Opal Jewelry
Precious Opal Jewelry
Welo Opal Jewelry
and other
Natural Opal Jewelry Designs

Would you like us to inform you when we add on this page more natural boulder opal gemstones, white precious opal gems and fire opal gems?
We do have additional opal gems in stock, so be sure to let us know if you have any opal gem special requests. Please contact our webmaster or our 'site' geologist with any questions or comments.

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Last Updated: December 1, 2013
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