An art deco emerald and Diamond sautoir, by Mauboussin. photo: Christie's Images Ltd 2012

The diamond-set S-shape link chain, composed of three bracelets, suspending a detachable pendant centering upon a sugarloaf cabochon emerald, enhanced by a diamond-set fringe,circa 1925, 62.0 cm, with French assay mark for platinum. Signed Mauboussin, no. 93401. Lot 6. Estimate CHF185,000 - CHF280,000

Accompanied by report no. 62003 dated 6 February 2012 from the SSEF Swiss Gemmological Institute stating that the emerald is of Colombian origin, with moderate amount of oil 

Christie's. Jewels for Hope: The Collection of Mrs Lily Safra 14 May 2012 Geneva