Natural Multi Color Sparkling Matrix Boulder Opal Gemstones 3.35 Ct. Free Form Cabochon Shape 10.2 xTreasure of Gems & Jewelry4.4(250)$1Jul 24, 2026
1.95ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 37FLThousandPlanet4.5(298)$103 days Left
5.01 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.2x9.6mm, 8XMLazo Heritage4.2(11)$25557 Lots Away
2.73 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 86XLLazo Heritage4.2(11)$25615 Lots Away
12.26ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 70ATThousandPlanet4.5(298)$103 days Left
2.35Ct Welo Black Opal Polished - Ethiopian OpalKsmith Heritage Auctioneers4.3(47)See Sold PriceJul 26, 2025
1.99Ct Welo Black Opal Polished - Ethiopian OpalKsmith Heritage Auctioneers4.3(47)See Sold PriceJun 29, 2025
