Natural Multi Color Flashing Opal Boulder 27.75 Ct. Free Form Cabochon Shape 30 x 19.2 Mm. GemstoneTreasure of Gems & Jewelry4.4(219)$1Mar 08, 2026
1.42Ct Welo Black Opal Polished - Ethiopian OpalKsmith Heritage Auctioneers4.3(45)See Sold PriceJul 27, 2025
2.40 ct Natural Multicolor Opal Triplet – Oval CabochonWeatherham Estate Treasures4(218)$150Mar 02, 2026