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A pair of unusual Colombian emerald, natural pearl and diamond ear pendants, by Etcetera© Christie's Image 2011

Each suspending a square-shaped emerald weighing 9.12 and 8.84 carats, enhanced by brilliant-cut diamond accents, to the drop-shaped natural pearl measuring 10.3 - 10.5 x 16.0 and 10.2 - 10.4 x 16.8 mm, joined to the sugarloaf emerald and half-domed pearl surmount with diamond detail, mounted in 18k white gold, 5.2 cm long, in fitted pink leather case. With maker's mark for Etcetera - Lot 3257. Estimate HK$10,500,000 - HK$18,000,000 ($1,300,000-1,800,000). Price Realized HK$15,220,000 ($1,965,560)

Accompanied by report no. 50437 dated 24 January 2008 from the SSEF Swiss Gemological Institute stating that the 9.12 and 8.84 carat emeralds are of Colombia origin with no indications of clarity modification; and the analyzed properties confirm the authenticity of these saltwater natural pearls

Also accompanied by report no. 07-G-0110 dated 8 May 2007 from Gemmological Technology Laboratory stating that the 9.12 and 8.84 carat emeralds are of Colombia origin (2) 

Christie's. HONG KONG MAGNIFICENT JEWELS, 31 May 2011, Convention Hall