Emerald, Diamond, Platinum Gold, Ring, Piranesi. Photo Heritage Auctions

The ring features an emerald-cut emerald measuring 13.30 x 10.30 x 5.80 mm and weighing 6.32 carats, enhanced by trapezoid-shaped diamonds weighing a total of 2.17 carats, set in platinum and 18k gold, marked Piranesi. A GIA Laboratory report # 2155194187 dated January 28, 2013 stating Natural Beryl, Origin Colombia, Indications of clarity Enhancement (F1), accompanies the emerald. Gross weight 7.85 grams. Size: 6-1/2 (sizeable) Estimate: $50,000 - $60,000.

Heritage Auctions. 2013 April 29. Jewelry Signature Auction - New York - http://jewelry.ha.com