Sapphire and diamond ring. Photo Sotheby's

Set with a cabochon sapphire stated to weigh 23.24 carats, the front of the mount decorated with a geometric pattern of brilliant-cut, triangular and baguette diamonds, size 511/2, French assay mark. Estimation 36,000 — 65,000 CHF

Accompanied by SSEF report no. 59325, stating that the sapphire is of Burmese origin, with no indications of heating.

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