Natural Boulder Opal Multi-Color Gemstones 21.40 Ct. Flashing Free Form CabochonTreasure of Gems & Jewelry4.4(245)$1Jun 28, 2026
27.28ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 67ATLazo Heritage4.2(10)$52 days Left
4.93 Carats Matrix Boulder Opal Teardrop Cabochon - Natural Australian Stone, 10XCLazo Heritage4.2(10)$52 days Left
5.01 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.2x9.6mm, 8XMLazo Heritage4.2(10)$52 days Left
2.35Ct Welo Black Opal Polished - Ethiopian OpalKsmith Heritage Auctioneers4.3(47)See Sold PriceJul 26, 2025
1.70Ct 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
