Oval Diamond Ring. Photo Sotheby's

Set with an oval diamond weighing 12.33 carats, to a plain band, size I. Estimate 12,000-15,000 GBP - Lot Sold: 97,250 GBP

NOTE: Accompanied by The Gem Testing Laboratory of Great Britain report no. 0078244, stating that the diamond is L Colour, SI2 Clarity.

Sotheby's. Fine Jewels, London, 13 Jul 2011 www.sothebys.com