AN ART DECO DIAMOND, EMERALD, ONYX AND ENAMEL BROOCH, BY BOUCHERON

细节
AN ART DECO DIAMOND, EMERALD, ONYX AND ENAMEL BROOCH, BY BOUCHERON
Designed as a single-cut diamond openwork stylised ribbon bow with cabochon emerald and onyx detail to the black enamel trim, circa 1925, with French assay mark, in a Boucheron blue leather fitted case (one diamond deficient)
Signed Boucheron, Paris