Sapphire and diamond ring, Cartier. Photo Sotheby's.

The cabochon sapphire weighing 11.67 carats, set within a frame of oval diamonds and brilliant-cut diamonds of yellowish tint, size 521/2, signed Cartier, numbered. Estimation 9,000 — 14,000 CHF

Please note that the diamonds of yellowish tint have not been tested for natural colour.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève | 13 mai 2014 - http://www.sothebys.com/