MARCUS & CO. ANTIQUE FIRE OPAL AND DIAMOND PENDANT-BROOCH

MARCUS & CO. ANTIQUE FIRE OPAL AND DIAMOND PENDANT-BROOCH
Cushion-shaped fire opal, single and old-cut diamonds, platinum-topped gold, fitted with collapsible pendant hoop, circa 1900, signed M.&Co.

Fire opal: measuring 16.49 x 13.31 x 8.67 mm and calculated to weigh 9.50 - 10.00 carats

Size/Dimensions: 3.2 x 2.3 cm (1 1⁄4 x 7⁄8 in)
Gross Weight: 9.4 grams