Lot 424. 29.67 carats Colombian emerald and diamond ring. Estimate 195,000 — 295,000 CHF (183,963 - 278,302 EUR). Lot sold 514,000 CHF. Photo Sotheby's.

Claw-set with an octagonal step-cut emerald weighing 29.67 carats, framed with circular- and brilliant-cut diamonds, size 551/2.

Accompanied by SSEF report no. 78978, stating that the emerald is of Colombian origin, with a minor amount of oil in fissures.

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