A magnificent platinum and diamond ring. Photo Sotheby's

The oval diamond weighing 23.62 carats, size 6½. Estimate 1,200,000-1,600,000 USD. Lot Sold: 1,874,500 USD

Accompanied by GIA report no. 1132392235 stating that the diamond is G color, VS1 clarity, with Excellent Polish and Symmetry.

Sotheby's. Magnificent Jewels. New York | 07 Dec 2011 www.sothebys.com