Highly important and rare ruby and diamond ring, Cartier. Photo Sotheby's

The modified octagonal ruby, of exceptional colour and purity, weighing 6.29 carats, set between baguette diamonds, size 53, signed Cartier. Lot 707. Estimate 1,100,000-1,650,000 CHF

Accompanied by Gübelin report and note no. 110800886, AGL report no. CS 44398 and GIA report no.5131171452, stating that the ruby is of Burmese origin, with no indications of heating.

PROVENANCE: Alice Appleton Hay
Adele Hay Fath
Creekmore W. Fath
Creekmore and Adele Fath Charitable Foundation

 Sotheby's. Magnificent Jewels and Noble Jewels. Genève | 14 mai 2012, 11:00 AM www.sothebys.com