Pink sapphire and diamond ring. Photo Sotheby's.

The oval pink sapphire weighing 22.42 carats, set within a cluster of brilliant-cut diamonds, the shoulders similarly set, size 521/2. Estimation 36,000 — 55,000 CHF

Accompanied by SSEF report no. 72263, stating that the pink sapphire is of East African origin, with no indications of heating.

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