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Opal Stone id-m-201614

Crystal opal set in 22k gold, with 24k granule accents and pierced sterling silver base with overlay. Jewelry and photo by Jessa and Mark Anderson.…

Opal Stone id-m-201605

“Harlequin Prince” black opal, 215.85 cts, Lightning Ridge, American Museum of Natural History. Photo by greyloch. Licensed under…

Opal Stone id-m-201595

This black opal shows a wide range of colors. Stayish Mine, Wollo Province, Ethiopia. Photo by James St. John. Licensed under CC By 2.0.

Opal Stone id-m-201590

This 15.5-carat double cabochon opal has a flash of color across its entire face. Tsehay Mewcha, Wollo, Welo Province, Ethiopia. © Rob Lavinsky,…