ANTIQUE BLACK OPAL AND DIAMOND BROOCH

ANTIQUE BLACK OPAL AND DIAMOND BROOCH
Modified oval polished tablet-cut black opal, old-cut diamonds, platinum-topped yellow gold, platinum, accompanied by a yellow gold pendant-necklace fitting, circa 1910

AGL, 2023, report no. 113520: natural opal, black, Australia, natural color, no gemological evidence of enhancements/treatments present

Size/Dimensions: brooch 4.4 x 3.8 cm (1 ¾ x 1 ½ in); necklace 45.7 cm (18 in)
Gross Weight: 27.4 grams