A pair of Colombian emerald, diamond, platinum and eighteen karat gold pendant earclips, Hammerman Brothers. Photo Freemans

each designed as a cluster of pear-cut and marquise-cut diamonds, suspending a detachable pendant with circular-cut Colombian emeralds; weighing approximately: 5.75 and 6.40 carats respectively, in a pear-cut, marquise and round brilliant-cut diamond surround; total diamond weight approximately: 21.20 carats; maker's mark for Hammerman Brothers. L: 2 1/2 in., 27.3 dwt. Estimate $50,000-80,000 

Accompanied by AGL report # CS 58889 A and B, dated January 23, 2014, stating that the emeralds are Colombian with minor clarity enhancement. 

Freemans. JEWELRY & WATCHES. Monday, May 5 at 12 noon - http://www.freemansauction.com/