Platinum and diamond ring. Photo Sotheby's

Centered by a cut-cornered rectangular step-cut diamond weighing 9.43 carats, flanked by two triangular-cut diamonds weighing approximately 4.00 carats, size 6¼, fitted with inner sizing band. Estimation 400,000 — 600,000 USD. Lot. Vendu 725,000 USD

Accompanied by GIA report no. 2155485708 stating that the diamond is D color, VS1 clarity. Together with a letter from the GIA stating that the diamond has been determined to be Type lla.

Sotheby's. Magnificent Jewels. New York | 11 déc. 2013 - www.sothebys.com