Seed pearl and diamond necklace-bracelet-tiara, late 19th century. Photo Sotheby's

Suspending a graduated fringe of foliate motifs set with seed pearls, circular-cut, cushion-shaped and rose diamonds, length approximately 400mm, central fringe detachable and can be worn on accompanying tiara frame, inner circumference approximately 160mm, reverse of necklace can be worn as a bracelet, length approximately 180mm, French import marks, fitted case stamped B. Noury. Estimation 7,000 — 10,000 GBP

Accompanied by Mauboussin certificate of authenticity, stating that la Maisson Noury created the necklace in 1890, Mauboussin took control of the Maisson Noury house in 1989.

Sotheby's. Fine Jewels. London | 12 déc. 2013. www.sothebys.com