Franks Black Onyx Diamond Brooch

An 18 karat yellow gold, black onyx and diamond brooch, Frank’s. Designed as a bold hammered gold quatrefoil centering an octagonally faceted sugarloaf black onyx measuring approximately 13.27 mm. and embellished with triads of brilliant cut diamonds of various sizes at four edges of the onyx. Total diamond weight approximately 0.84 carats. Width approximately 1 7/8 inches. Gross weight approximately 44.50 grams. Signed Frank’s.