18 novembre 2015
Emerald and diamond ring
8.31 carats Colombian emerald and diamond ring. Estimate HK$3,500,000 - 4,500,000 ( US$450,000 - 577,000 ). Photo Tiancheng International Centring on an octagonal step-cut emerald weighing 8.31 carats, flanked by two emerald-cut diamonds weighing 2.05...