17 mai 2016
7.04 carats Colombian emerald, sapphire, rock crystal and diamond ring, René Boivin, 1991
Lot 304. 7.04 carats Colombian emerald, sapphire, rock crystal and diamond ring, René Boivin, 1991. Estimate 44,000 — 53,000 CHF. Lot sold 131,250 CHF . Photo Sotheby's Set with a sugarloaf emerald stated to weigh 7.04 carats, between pear-shaped cabochon...