Natural pearl and diamond ring. Photo Sotheby's

Set with three button-shaped natural pearls, highlighted with brilliant-, single-cut and baguette diamonds, size M. Estimate 4,500-6,500 GBP

Accompanied by The Gem & Pearl Laboratory report no. 07948, stating that the pearls were found to be natural, saltwater.

Formerly in the collection of Baroness de Renzis Sonnino

Sotheby's. Fine Jewels. London | 11 juil. 2013, 10:30 AM - www.sothebys.com