25 septembre 2017
Rare Paraíba Tourmaline and Diamond Ring
Lot 1682. Rare 12.67 carats Brazilian Paraíba Tourmaline and Diamond Ring. Estimate 8,750,000 — 11,000,000 HKD . Photo: Sotheby's. Set with a cushion-shaped Paraíba tourmaline weighing 12.67 carats, flanked to each side by a pear-shaped and circular-cut...