A sapphire and diamond ring, by Bvlgari. Photo Christie's Image Ltd 2014

Set with a cushion-cut sapphire, weighing approximately 27.42 carats, to the circular-cut diamond gallery and bifurcated shoulders, enhanced with baguette-cut and shield-shaped diamonds, mounted in platinum. Signed BVLGARI. Estimate $20,000 – $30,000

With report CS 59818 dated 13 March 2014 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of this material would be classified as Ceylon (Sri Lanka). Standard Enhancement: Heat

Christie's. MAGNIFICENT JEWELS, 16 April 2014, New York, Rockefeller Plaza - www.christies.com