Fancy Deep Yellow Diamond, Diamond, Platinum, Gold Ring, Piranesi. Photo Heritage Auctions

The ring features a pear-shaped diamond measuring 15.28 x 10.38 x 6.14 mm and weighing 7.02 carats, enhanced by kite-shaped diamonds weighing a total of 0.86 carat, set in platinum and 18k gold, marked Piranesi. A GIA Laboratory report # 1122904603 dated December 20, 2010 stating Natural, Fancy Deep Yellow color, VS2 clarity, accompanies the center stone. Gross weight 10.58 grams. Size: 6-1/2 (sizeable) Estimate: $130,000 - $150,000.

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