Description
DIAMOND AND ENAMEL BROOCH, 2ND HALF OF THE 19TH CENTURY The quatrefoil surmount, set with an old cushion-shaped diamond, within an openwork surround of similarly-cut diamonds and blue guilloche enamel, suspending three similarly-set drops, principal diamond approximately 0.90 carats, remaining diamonds approximately 3.10 carats total, one diamond deficient, length 7.5cm