9 mai 2017
Ruby and diamond demi-parure, Schlumberger, circa 1970
Lot 165. Ruby and diamond demi-parure, Schlumberger, circa 1970. Estimate 82,000 — 142,000 CHF . Photo: Sotheby's. Comprising: a brooch designed as a star collet-set with oval and cushion-shaped rubies, accented with brilliant-cut and marquise-shaped...