An impressive art deco ruby and diamond necklace, by Cartier

The central triangular panel with oval-shaped ruby collets and old-cut diamond geometric surround to the neckchain composed of a series of openwork buckle-shaped links mounted with old-cut diamonds and rubies, converts to form a brooch and a pair of bracelets, 1936, as necklace 42.0 cm inner circumference, as brooch 6.3 cm wide, each bracelet 16.8 cm long, in original fitted green leather Cartier case. Estimate £100,000 - £150,000 ($160,200 - $240,300)

Accompanied by report No. GE2008-223 dated 28 November 2008 from Cartier stating the necklace/brooch/bracelet combination is a genuine Cartier item, Cartier London, 1936 (4)

Provenance: This necklace was formerly the property of the first Baroness Ravensdale of Kedleston (1896-1966), the eldest daughter of the first Marquess Curzon of Kedleston, and thence by descent

Christie's. Jewellery. 10 June 2009. London, King Street www.christies.com