An Important Colombian Emerald and Diamond Brooch-Pendant Necklace. Photo Phillips.

The detachable pendant designed as a circular-cut diamond and vari-cut Colombian emerald plaque, suspended from a sautoir designed as a series of navette-shaped links enhanced by bead-set diamonds, interspersed with collet-set diamonds, mounted in 18K white and yellow gold, necklace length 27 1/2 inches, pendant length 2 inches. Estimate $75,000 - 100,000

With report no.CDC1310401 dated 31 October 2013 from the C. Dunaigre Laboratory, stating that the emeralds are of Colombian origin, with minor to moderate clarity enhancement

Phillips. JEWELS NEW YORK 30 APRIL 2014 10AM - http://phillips.com/