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Photograph; Opal Mohs; 5 to 6.  Specific Gravity; 2.0 to 2.2 Form and habit; Massive, thin coating, amorphous Location; Morrow County, Oregon. Reference; Dynamic Earth, An Introduction to Physical Geology, Fifth Edition.  Brian J. Skinner, Stephen C. Porter, Jeffery Park. Reference; The New Zealand Rockhound, Natalie Fernandez, 1981. Chapter 2, p.g. 31, 81. COPYRIGHT ©

How to spot the difference between real and fake opal

Opal ♡

Boulder Opal Stones 46 x 22 x 100 carats Auction Opal Auctions

Another angle of this 801 carat Boulder Opal shows the blues that come out under different light....Bill Kasso

Another angle of this 801 carat Boulder Opal shows the blues that come out under different light.Bill Kasso Z

Black opal from Lightning Ridge, Australia. I would love to make a pendant necklace with this.

Hybrid Booster Pack

An carat Black Opal purchased by Richard Krementz in Lightning Ridge, Australia. Courtesy of Richard Krementz Gemstones. Photo by Robert Weldon/GIA (Gemological Institute of America) via Dieter Rosenkranz

opal doe

Magnificent example of Good quality Andamooka Matrix Opal Fantastic patterns and play of colour unique to Andamooka Matrix Opal. Shaped and polished piece.

Opal

Black Fire Opal black opal collection pieces email for current selections black red .

Unique/ Classic Black Opal  Lightning Ridge, Australia   This unique and unusual cabochon of true black opal has been fashioned by the gem cutter in a lozenge-shaped outline. The body color is a true black, w/vibrant & vivid play-of-color in blues & greens, characteristic for the region

Unique/ Classic Black Opal Lightning Ridge, Australia This unique and unusual cabochon of true black opal has been fashioned by the gem cutter in a lozenge-shaped outline. The body color is a true black, w/vibrant & vivid play-of-color in blues & green

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