A 13.95 carats Colombian emerald and diamond pendant-brooch. Estimate: $25,000 – $35,000. Photo Christie's Image Ltd 2015

Set with a rectangular-cut emerald, weighing approximately 13.95 carats, within a marquise, pear and circular-cut diamond surround, to the detachable marquise and circular-cut diamond bail, 2 ins., mounted in platinum

Accompanied by report no. CS 68859 dated 13 July 2015 from the AGL American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of this emerald would be classified as Colombia. Insignificant to minor clarity enhancement, traditional type

PROPERTY FROM THE ESTATE OF GLORIA G. MEYER 

Christie's. IMPORTANT JEWELS, 20 October 2015, New York, Rockefeller Plaza