A fine Ceylon  sapphire and diamond pendant necklace. Estimate $200,000 – $300,000. Photo Christie's Image Ltd 2015.

Suspending a detachable pendant, set with a cushion-cut sapphire, weighing approximately 17.05 carats, trimmed with cut-cornered square-cut diamonds, one weighing approximately 0.99 carat, from a line set with baguette-cut diamonds and a square-cut diamond, weighing approximately 2.08 carats, to the neckchain, set with a circular-cut sapphire and a series of graduated oval-cut sapphires, spaced by baguette and circular-cut diamonds, mounted in platinum, 17 1/2 ins.

With report CS 66133 dated 17 February 2015 from the American Gemological Laboratories stating that the origin of this sapphire would be classified as Ceylon (Sri Lanka). Standard heat enhancement

With report 2115894598 dated 31 March 2010 from the Gemological Institute of America stating that the diamond, weighing approximately 2.08 carats, is F color, VS2 clarity

With report 2115075642 dated 9 March 2010 from the Gemological Institute of America stating that the diamond, weighing approximately 0.99 carat, is D color, VVS1 clarity

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