A diamond and coloured diamond necklace, by Van Cleef & Arpels. Photo Christie's Image Ltd 2012

The detachable pendant set with a pear-shaped brown diamond in a brilliant-cut diamond suround, to the diamond-set navette-shaped link chain, can be detached to form two bracelets, necklace 39.0 cm, bracelets 18.0 cm each, with French assay marks for gold. Signed VCA for Van Cleef & Arpels, nos. 26013, 26014 and 26016 - Estimate CHF40,000 - CHF60,000

Please note that the coloured diamond has not been tested for natural colour (2)

Christie's. Geneva Magnificent Jewels, 13 November 2012, Geneva