PIETERSITE CABOCHON ROCK STONE LAPIDARY SPECIMENCol. Christie Hatman Auctioneers4.3(484)US$52 days Left
4.71ct AFRICAN BLACK OPAL OVAL CABOCHON CUT NATURAL UNTREATED RARE 13x10mmModern Jewelry4.4(204)US$3,300Mar 19, 2026