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An impressive sapphire and diamond ring. Photo Christie's Image Ltd 2012

Set with a rectangular-cut sapphire, weighing approximately 45.81 carats, the shoulders set with pear-shaped diamond clusters, mounted in platinum. Estimate $100,000 - $150,000. Price Realized $482,500 

With report CS 38915 dated 8 May 2007 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the sapphire would be classified as Ceylon (Sri Lanka). No gemological evidence of heat enhancement present 

Christie's. Magnificent Jewels, 10 December 2012. New York, Rockefeller Plaza.