Emerald ring, Bulgari, 1970s. Photo Sotheby's.

Claw-set with a cabochon emerald weighing 26.34 carats, signed Bulgari, case by Bulgari, size 60. Estimation 180,000 — 220,000 CHF

Accompanied by SSEF report no. 31459, dated 11 February 1998, and no. 68104, dated 15 May 2013, each stating that the emerald is of Colombian origin, with a minor amount of oil in fissures.

PROPERTY OF PRINCESS ISMENE CHIGI DELLA ROVERE

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 13 mai 2014 - http://www.sothebys.com/