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)5 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
4.90 Carats Natural Black Fire Opal Loose Stone ? Vibrant Flashing Colors - 14X11X7.5 mmFantasy Jewelry3.6(155)$9810 hrs Left
5.01 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.2x9.6mm, 8XMLazo Heritage4.4(22)$259 hrs Left
3.82 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.8x9.5mm, 7XMLazo Heritage4.4(22)$259 hrs Left
2.35Ct Welo Black Opal Polished - Ethiopian OpalKsmith Heritage Auctioneers4.4(50)See Sold PriceJul 26, 2025
1.74Ct Welo Black Opal Polished - Ethiopian OpalKsmith Heritage Auctioneers4.4(50)See Sold PriceJun 29, 2025
