A diamond and 4.97 carats detachable pear-shaped pendant necklace, by Tiffany & Co. Estimate $300,000 – $500,000. Photo Christie's Image Ltd 2015

Suspending a detachable pear-shaped diamond, weighing approximately 4.97 carats, to the necklace, designed as a graduated series of pear-shaped and marquise-cut diamonds, joined by a clasp set with a modified cut-cornered rectangular-cut diamond trimmed with marquise-cut diamonds, mounted in platinum, 15 1/2 ins., in a Tiffany & Co. black suede box. Signed Tiffany & Co.

With report 5171048963 dated 27 February 2015 from the Gemological Institute of America stating that the diamond is D color, VS2 clarity

Christie's. MAGNIFICENT JEWELS, 14 April 2015, New York, Rockefeller Plaza