Natural Multi Color Sparkling Matrix Boulder Opal Gemstones 3.35 Ct. Free Form Cabochon Shape 10.2 xTreasure of Gems & Jewelry4.4(249)$1Jul 24, 2026
5.01 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.2x9.6mm, 8XMLazo Heritage4.2(11)$25894 Lots Away
2.07Ct Welo Black Opal - Ethiopian Opal - Faceted PolishedKsmith Heritage Auctioneers4.3(47)See Sold PriceJul 27, 2025
Natural Multi Color Flashing Boulder Opal Gemstones 3.49 Ct. Free Form Cabochon ShapeTreasure of Gems & Jewelry4.4(249)$105 days Left
30.45ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 7AVThousandPlanet4.5(297)$102 days Left
1.67Ct Welo Black Opal Polished - Ethiopian OpalKsmith Heritage Auctioneers4.3(47)See Sold PriceJul 27, 2025
2.22Ct Welo Black Opal Faceted Polished - Ethiopian OpalKsmith Heritage Auctioneers4.3(47)See Sold PriceJul 26, 2025
