An important Art Deco Diamond sautoir, by Cartier. Photo: Christie's Images Ltd., 2010

The diamond-set link chain suspending a shield-shaped detachable pendant set with two rows of brilliant-cut diamonds and centering upon a diamond weighing 12.70 carats, necklace 1929, pendant 8.0 cm, necklace 68.0 cm, detachable in four sections, in red leather Cartier pouch. Signed Cartier London, nos. CG24036 and 2175 - Estimate CHF700,000 - CHF1,000,000 ($719,756 - $1,028,223)

Accompanied by Certificate of Authenticity no. GE2010-137 dated 7 October 2010 from Cartier (5)

Christie's. Jewels: The Geneva Sale, 17 November 2010. Geneva www.christies.com