Bidspirit auction | A platinum Art Deco brooch

A platinum Art Deco brooch with onyx and diamonds - A platinum Art Deco brooch with onyx and diamonds A bar brooch centrally set with an old brilliant cut diamond, ca. 0.10 ct. set inside a round cut onyx flanked by two rose cut diamonds. Gross weight: 2.5 g. L: 6 cm. /2.36 inch