Modern 6.52ct fancy yellow sapphire and old cut diamond cluster ring

Modern 6.52ct fancy yellow sapphire and old cut diamond cluster ring in 18kt white gold. Centred with an estimated 6.52ct oval mixed cut fancy yellow sapphire in a raised claw setting, encircled by a row of varying sized cushion shape Old European cut diamonds in raised claw settings, to a large raised cluster design with enclosed collets, curving claws, pierced sweeping gallery and met to the base with concentric loops and split inward tapering shoulders which broaden to an open ended shank.