Lot 324. A diamond 'zip' necklace, by Van Cleef & Arpels. Estimate CHF 200,000 - CHF 300,000. Price realised CHF 401,000© Christie's Image Ltd 2015

Designed as an articulated pavé-set diamond long zipper, to the baguette-cut diamond knot puller tassel, 2000s, 119.8 cm, with French assay mark for gold. Signed Van Cleef & Arpels, no. ML3894. 

Christie's. GENEVA MAGNIFICENT JEWELS, 13 May 2015, Geneva