, centred by an old round brilliant cut diamond to a two row border of calibre cut sapphires and rose cut diamonds, the diamonds millegrain set, the sapphires collet set, mounted in platinum and gold, the central diamond approximately 0.40ct Cluster 1.4 x 1.4cm / 9/16 x 9/16'' Weight: 2.5g
Art Deco diamond and sapphire cluster ring, French c.1925, central rectangular cut diamond of approximately 1.00ct, between calibre sapphire and diamond dart shoulders,