5.07Ct Natural Ethiopian Black Opal - 15.0x11.6x6.5 mm , 585CKsmith Heritage Auctioneers4.4(49)$507 hrs Left
4.63Ct Natural Ethiopian Black Opal - 16.2x12.0x5.6 mm , 582CKsmith Heritage Auctioneers4.4(49)$507 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
5.01 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.2x9.6mm, 8XMLazo Heritage4.4(22)$251 day Left
