Opal Stone – Natural, Cabochon, Green, 17500 ct
This 3.5 kg beauty, the Olympic Australis opal, was found 10 meters below the surface at Coober Pedy. It’s the most expensive opal in the world.…
Opal Stone – Natural, Specimen, Orange
Opalized bivalve found in Coober Pedy. Photo by James St. John. Licensed under CC By 2.0.
Opal Stone – Natural, Specimen, Green
Blue-green opal veins in ferruginous (iron-rich) rock from Australia, from the collection of the Natural History Museum, London, UK. Photo by…
Opal Stone – Natural, Other, Orange
Front, transformable reversible earrings made with opal, paraíba tourmaline, and diamonds. Photo by Sara Rey photography. © Lindsay Jane…
Opal Stone – Natural, Cabochon, Blue
Swirls of green in this deep blue opal are perfect for a pendant design inspired by nature. Pendant design by Michael Endlich. Photo by Sarah Francis.…
Opal Stone – Natural, Faceted, Green
With trace amounts of uranium compounds, this hyalite opal is slightly radioactive and fluoresces under ultraviolet light. Photo by James…
Black Opal – Natural, Cabochon, Black, 16.42 ct
Black opal, 16.42 cts, from Lightning Ridge, Australia. Photo by Daniel Mekis. Licensed under CC By-SA 3.0.
Black Opal – Natural, Rough, Black
A great find. © Bonanza Opal Mines, Inc. Used with permission.
Opal Stone – Natural, Faceted, Blue, 4 ct
A contraluz opal from Mexico, illuminated from back (approximately 4 cts). Photo © Joel E. Arem, PhD, FGA. Used with permission.
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