An antique emerald and diamond brooch. Photo Christie's Image Ltd 2013

Centering upon three rectangular-cut emeralds in an old-cut diamond frame, to the rectangular-cut emerald surround, mounted in gold, 1870s, 3.2 cm, in brown leather case. Estimate:  $22,230 – $33,345

Accompanied by report no. 69830 dated 19 September 2013 from the SSEF Swiss Gemmological Institute stating that the 3 larger emeralds are of Colombian origin, 1 with indications of minor amount of oil, 2 with no indications of clarity modification

THE PROPERTY OF THE ROYAL FAMILY OF SAVOY

Christies. MAGNIFICENT JEWELS. 12 November 2013. Geneva.