ART DECO "ECUSSON" BROOCH In white gold, set with two rows of old-cut diamonds holding a drop of old-cut round and cushion-cut diamonds surrounded by a cascade of baguette and round diamonds. Circa 1930. An old cut diamond and 18k gold Art Deco brooch. Circa 1930. RC : Weight of the largest diamonds: approximately 0.80 ct and 0.78 ct. In a jewellery box. Size : 4 x 4 cm. Gross weight: 17.8 g (18k - 750).