8.50Ct Natural Ethiopian Black Opal - 18.7x11.5x7.8 mm , 595CKsmith Heritage Auctioneers4.3(48)$12017 hrs Left
8.07Ct Natural Ethiopian Black Opal - 18.3x12.9x6.8 mm , 597CKsmith Heritage Auctioneers4.3(48)$10017 hrs Left
Natural Boulder Opal Multi-Color Gemstones 21.40 Ct. Flashing Free Form CabochonTreasure of Gems & Jewelry4.5(263)$1Aug 30, 2026
1.41ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 68FXThousandPlanet4.5(309)$102 days Left
