Fine Highly Translucent Emerald Green Jadeite and Diamond Ring. Estimate: HK$4,800,000 - 5,800,000 (US$615,000 - 745,000). Sold for HK$5,310,000 . Photo Tiancheng International

Centring on a highly translucent oval jadeite cabochon of rich emerald green colour, decorated with brilliant-cut diamonds to the gallery extending to the shoulders, the diamonds together weighing approximately 3.30 carats, mounted in 18 karat white gold. Ring size: 6¼

Accompanied by Hong Kong Jade & Stone Laboratory report numbered KJ89625, dated 19 March 2015, stating that the jadeite is natural, known in the trade as 'A Jade'.

Tiancheng International. Jewellery and Jadeite Spring Auction 2015.