Quadrangular platinum brooch pierced with lines of 8/8 round diamonds, centered with a round old-cut diamond set on onyx, the ends drawing stylized palmettes set with onyx, coral and sapphires. Work of the 1925's. Dimensions: approx. 6 x 1.5 cm (narrowest). Gross weight: 13.3 g (knocks) A 1925 diamond, onyx, coral and sapphire brooch