A pear-shaped unmounted emerald. Photo Christie's Image Ltd 2014.

The modified pear-shaped emerald, weighing approximately 20.27 carats (with drill hole for suspension). Estimate $30,000 – $40,000

With report 12080121 dated 21 August 2012 from the Gübelin Gem Lab stating that gemmological testing revealed characteristics consistent with those of emeralds originating from Colombia. Indications of minor clarity enhancement 

Christie's. MAGNIFICENT JEWELS, 16 April 2014, New York, Rockefeller Plaza -www.christies.com