Details
ART DECO DIAMOND AND BLACK ONYX BROOCH
Designed as a platinum circle set with alternating old European-cut diamonds and calibré-cut black onyx

Metal: Platinum
Stones: Black onyx
Diamonds: 24 old European-cut diamonds weighing approximately 1.20 carats total
Size/Dimensions: Diameter 1 1/8 inches
Signature: G. & C. Co. for Greenleaf & Crosby
Circa 1920

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