An emerald and diamond ring,. Photo Christie's Image Ltd 2014

Set with a square-cut emerald, weighing approximately 7.43 carats, to the triangular-cut diamond shoulders, mounted in platinum, ring size 8. Estimate CHF80,000 – CHF120,000 ($91,792 - $137,688)

Accompanied by report no. 40642 dated 12 February 2003 from the SSEF Swiss Gemmological Institute stating that the emerald is of Colombian origin, with no indications of clarity enhancement

Please note that the report is more than 5 years old and might require an update

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