A fine emerald and diamond ring, by Tiffany & Co. Photo Christie's Image Ltd 2014

Set with a cut-cornered square-cut emerald, weighing approximately 5.77 carats, to the baguette-cut diamond shoulders, mounted in platinum, ring size 6¼. Signed Tiffany & Co., no. 19197581. Estimate CHF60,000 – CHF80,000 ($68,844 - $91,792)

Accompanied by report no. 72685 dated 13 February 2014 from the SSEF Swiss Gemmological Institute stating that the emerald is of Colombian origin, with no indications of clarity modification

Identification report no. 166/66/19197581 from Tiffany & Co. stating that the 5.77 carat emerald is of Colombian origin, with no indications of clarity enhancement

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014, Geneva -http://www.christies.com/