48.00 carats Colombian Emerald and Diamond Pendent Necklace. Estimate: HK$1,500,000 - 2,000,000 (US$192,000 - 256,000). Sold for HK$1,770,000. Photo Tiancheng International

Centring on a cabochon emerald weighing 113.12 carats, surrounded by brilliant-cut diamonds extending to the necklace, the diamonds altogether weighing approximately 48.00 carats, mounted in 18 karat white gold, pendant detachable, length approximately 408mm. 

Accompanied by Gübelin report numbered 15021016, dated 13 February 2015, stating that the 113.12 carat emerald is natural, Green colour, of Colombian origin, with indications of minor clarity enhancement.

Tiancheng International. Jewellery and Jadeite Spring Auction 2015.