A Set of Sapphire and Diamond Jewelry, by Graff. Photo: Christie's Images Ltd 2013

Comprising a necklace, suspending a graduated fringe of heart-shaped sapphires, each within a pear, marquise and circular-cut diamond surround, from an alternating line of heart-shaped sapphires and circular-cut diamonds, to the pear, marquise and circular-cut diamond backchain; and a pair of ear pendants en suite (surmounts may be worn as ear clips without the detachable pendants; detachable pendants with collapsible posts to be worn as ear clips), mounted in platinum and gold, necklace 15 ins., in a Graff navy leather envelope case. Each signed Graff, ear pendants no. 46845. Estimate:  $350,000 – $500,000

With report CS 51079 dated 14 August 2012 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the sapphires in the necklace would be classified as a combination of Ceylon (Sri Lanka) and Madagascar. Standard Enhancement: Heat

With report CS 51080 A and B dated 14 August 2012 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the sapphires in the ear pendants would be classified as Ceylon (Sri Lanka). Standard Enhancement: Heat (2)

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