Burmese ruby and diamond ring, early 20th century and later. Estimate 48,000 — 53,000 CHF (45,283 - 50,000 EUR). Photo Sotheby's

Collet-set with a fancy-cut ruby, surrounded with single-cut diamonds, size 57.

Accompanied by SSEF report no. 77069, stating that the ruby is of Burmese origin, with no indications of heating.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 12 mai 2015, 10:30 AM