Lot 570. Sapphire and diamond ring, Vaillant and Duverne, circa 1960. 43,000 — 65,000. Lot sold 170,500 CHF.Photo Sotheby's 2012

The oval sapphire weighing 12.74 carats, within a bombé surround of baguette, tapered baguette and marquise-shaped diamonds, size 511/2, French maker's marks.

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

From the collection of an European lady of title.

Sotheby's. Magnificent Jewels Geneva | 14 Nov 2012