Brooch composed of three 18K (750) white gold and platinum discs each formed by concentric circles set with old-cut diamonds, each centered by a round sapphire, adorned with calibrated sapphires. French work of the years 1925. Dimensions : 2,8 x 3 cm approximately. Gross weight: 7.4 g (winding) A French 1925 sapphires and diamonds brooch