Important ruby and diamond ring.. Photo Sotheby's

ruby Centring on an oval ruby weighing 10.16 carats, within a border of similarly shaped diamonds, mounted in gold and platinum, size 51½. Estimate 685,000-900,000 CHF

Accompanied by Gübelin certificate no. 1005559, GRS certificate no. GRS2010 - 092389 and C. Dunaigre certificate no. CDC 0809309, all stating that the ruby is of Burmese origin, with no indications of heating.

Sotheby's. Magnificent Jewels, Geneva | 15 Nov 2011 www.sothebys.com