An important diamond ring. Photo Bonhams Set with a cushion modified brilliant-cut diamond, weighing 10.15 carats, to a thin diamond-set hoop, mounted in platinum, ring size 4½. Sold for HK$ 8.3 million. Accompanied by a certificate from GIA, stating...

Important marquise brilliant-cut diamond ring. Photo Sotheby's Simply set with a modified marquise brilliant-cut diamond weighing 14.12 carats, to a mount set with brilliant-cut diamonds extending to the shoulders, mounted in platinum. ESTIMATION 16,000,000-20,000,000...