A Victorian emerald and diamond ring. Photo Christie's Image Ltd 2014

The square cut-cornered emerald claw-set between an old-cut diamond to either side, raised on a pierced scrolling gallery, to carved shoulders and tapering hoop, circa 1890. Estimate £20,000 - £30,000 ($33,480 - $50,220). Price Realized £104,500 ($174,620)

Accompanied by report no.74160 dated 14 April 2014 from The Swiss Gemmological Institute (SSEF), stating that the emerald is natural, with indications of clarity modification, minor oiling, origin Colombia

Christie's. IMPORTANT JEWELS,4 June 2014,London, King Street -http://www.christies.com/