A Colombian Emerald and Diamond Ring. Photo Philips de Pury & Company

Set to the center with a cushion-cut emerald, weighing approximately 7.24 carats, to the circular-cut diamond bombé front and gallery, mounted in 18K white gold, size 7.  Lot 132. Estimate $40,000-50,000 

With report no.CS48869 dated 29 March 2012 from the American Gemological Laboratories, stating that the emerald is of Colombian origin, with faint indications of clarity enhancement