Sapphire and diamond ring, Vaillant and Duverne, circa 1960 - Photo Sotheby's

The oval sapphire weighing 12.74 carats, within a bombé surround of baguette, tapered baguette and marquise-shaped diamonds, size 51^1/2, French maker's marks. Estimation: 43,000 - 65,000 CHF - Lot. Vendu 170,500 CHF

Accompanied by a duplicate SSEF report no. 63791, stating that the sapphire is of Ceylon origin, with no indications of heating.

Sotheby's. Magnificent Jewels. Genève | 14 nov. 2012 www.sothebys.com