A sapphire ring, by Hemmerle. Photo: Christie's Images Ltd 2013

Set with a bezel-set rectangular-cut sapphire, weighing approximately 14.33 carats, to the iron and 18k white gold hoop, with maker’s mark. Signed Hemmerle. 

With report CS 54164 dated 27 March 2013 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the sapphire would be classified as Burma (Myanmar). No gemological evidence of heat

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