Diamond and sapphire quatrelobe cluster ring

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