The ‘Pigeon Heart Ruby’ ring, Cartier. Photo Sotheby's

The cushion-shaped cabochon ruby weighing 31.30 carats, claw-set to a mount accented with brilliant-cut diamonds, size 51, signed Cartier, numbered, French assay and maker’s marks, case by Cartier. Estimate:  365,000 – 545,000 CHF

Accompanied by SSEF report no.68467, stating that the ruby is of Burmese origin, with no indications of heating.

Additionally accompanied by Cartier Certificate of Authenticity no. 82 and a photocopy of the original design by Cartier.

PROPERTY FROM A ROYAL COLLECTION

Sotheby's. Magnificent Jewels. Geneva | 13 Nov 2013 - http://www.sothebys.com