Natural Multi Color Flashing Boulder Opal Gemstones 19.77 Ct. Free Form Cabochon Shape 32 x 17 Mm.Treasure of Gems & Jewelry4.5(268)$1(1 bid)6 days Left
Natural Multi Color Sparkling Matrix Boulder Opal Gemstones 3.35 Ct. Free Form Cabochon Shape 10.2 xTreasure of Gems & Jewelry4.5(268)$1(1 bid)Sep 18, 2026
5.01 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.2x9.6mm, 8XMLazo Heritage4.4(22)$251 day Left
2.73 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 86XLLazo Heritage4.4(22)$251 day Left
1.70Ct Welo Black Opal Polished - Ethiopian OpalKsmith Heritage Auctioneers4.4(50)See Sold PriceJun 29, 2025
1.16Ct Welo Black Opal Faceted Polished - Ethiopian OpalKsmith Heritage Auctioneers4.4(50)See Sold PriceJun 29, 2025
