A Diamond Necklace, by Van Cleef & Arpels. Photo: Christie's Images Ltd 2013.

Designed as a graduated baguette and circular-cut diamond line, extending a marquise-cut diamond fringe, to the V-shaped staggered terminals at the front, mounted in platinum, 15½ ins., in a Van Cleef & Arpels gray leather envelope case. Signed V.C.A. for Van Cleef & Arpels, N.Y., no. 29361. Estimate:  $200,000 – $300,000 

Christie's. MAGNIFICENT JEWELS. 15 October 2013. New York, Rockefeller Plaza.