Emerald and diamond ring. Photo Sotheby's

The oval emerald within a surround of triangular and brilliant-cut diamonds, the shank accented with single-cut diamonds, size J. Estimation 10,000 — 15,000 GBP

Sotheby's. Fine Jewels, London | 16 juil. 2014, 10:00 AM -www.sothebys.com