Lot 324. Fine gem set, onyx and diamond necklace, Cartier, 1930s and later. Estimate 200,000 — 285,000 CHF. © Sotheby's 2018.

The pendant set with circular-cut and cushion-shaped diamonds and highlighted with black lacquer, the detachable lower section supporting two articulated tassels set with variously cut rubies, sapphires, emeralds and diamonds, to a tapered necklace composed of open rectangular and semi-circular onyx links, the spacers and clasp set with circular-cut and cushion-shaped diamonds, length approximately 430mm, signed Cartier