Lot 579. Impressive emerald and diamond necklace, Bulgari, circa 1970. Estimate:  285,000 – 470,000 CHF. Lot sold 509,000 CHF. Courtesy Sotheby's

Suspending a graduated fringe of step-cut emeralds, highlighted with brilliant-cut and baguette diamonds, length approximately 370mm, signed Bulgari, case stamped Bulgari. 

Property of an European Princely Family.

Sotheby's. Magnificent Jewels and Noble Jewels. Genève | 14 mai 2013 - www.sothebys.com