An art deco emerald and diamond bracelet, circa 1935. Photo: Bonhams.

Composed of four openwork convex links, each inset with a cabochon emerald 'segment', within a frame of single-cut diamonds, connected by buckle-shaped links of similarly cut diamonds, mounted in platinum, millegrain detail throughout, diamonds approximately 6.00 carats total, length 18.5cm, Cartier case. Estimate £8,000 - 10,000 (€9,700 - 12,000)

The use of unusually shaped cabochons is similar in taste to a bracelet by Cartier, made by special order in 1936, with five fancy-shaped peridot cabochons in the strap. See exhibition catalogue "Cartier: Style and History", Réunion des Musées Nationaux-Grand Palais, Paris, 2013, No 458.

Bonhams. FINE JEWELLERY. London, New Bond Street, 30 Apr 2014 - www.bonhams.com