Impressive and fine emerald  and diamond ring. Photo Sotheby's

Centring on a cushion-shaped emerald weighing 16.83 carats, flanked by tapered baguette diamonds together weighing approximately 1.40 carats, mounted in platinum. ESTIMATION 8,800,000-10,000,000 HKD

NOTE: Accompanied by Gübelin report numbered 12015050, and AGL report numbered CS 43329, stating that the 16.83 carat emerald is natural, of Colombian origin, with no indications of clarity enhancement; also accompanied by a separate AGL JewelFolio, stating that "this gem exhibits the richly saturated and homogeneous, slightly bluish-green colour representative of fine-quality emeralds of the Muzo mining area... this gem possesses a very high clarity...without any visible texture. Such clarity in an emerald of 16 cts is very rare... The 16.83 ct emerald detailed in this reports reflects a superior level of craftsmanship... provides a very high degree of brilliancy and light return... A Colombian emerald possessing such a combination of attributes as superior colour, uncommon clarity and wellproportioned cut, identifies this emerald as a gem of high rarity."

Sotheby's. Magnificent Jewels and Jadeite. Hong Kong | 03 avr. 2012 www.sothebys.com