6.28Ct Natural Ethiopian Black Opal - 13.4x10.8x8.5 mm , 589CKsmith Heritage Auctioneers4.4(49)$505 hrs Left
6.85Ct Natural Ethiopian Black Opal - 16.5x14.6x6.5 mm , 583CKsmith Heritage Auctioneers4.4(49)$505 hrs Left
Natural Multi Color Flashing Boulder Opal Gemstones 19.77 Ct. Free Form Cabochon Shape 32 x 17 Mm.Treasure of Gems & Jewelry4.5(267)$1(1 bid)Sep 12, 2026
Natural Multi Color Sparkling Matrix Boulder Opal Gemstones 3.35 Ct. Free Form Cabochon Shape 10.2 xTreasure of Gems & Jewelry4.5(267)$1(1 bid)Sep 18, 2026
