Sapphire and diamond ring. Photo Sotheby's

The step-cut sapphire weighing 7.45 carats, set between triangular diamonds, size 56. Estimation 72,000 — 125,000 CHF

Accompanied by SSEF report no. 55759 and Gübelin report no. 14030283, each 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/