ART DECO OVAL BROOCH In platinum, centred on an emerald-cut diamond set with baguette-cut diamonds in an openwork setting of 8/8-cut diamonds. Circa 1930. A diamond and platinum Art Deco brooch. Circa 1930. RC : Dimensions : 4,5 x 3 cm. Gross weight: 11.9 g ( Pt - 950).