Lot 55. 8.04 carat Burmese "Royal Blue" sapphire and diamond ring. Estimate HK$450,000 - 650,000 (US$58,000 - 83,300). Photo Tiancheng International

Centring on an oval sapphire weighing 8.04 carats, decorated with brilliant-cut diamonds extending to the shoulders, the diamonds together weighing approximately 3.15 carats, mounted in 18 karat white gold. Ring size: 5½

Accompanied by GRS report numbered GRS2016-040139, dated 11 May 2016, stating that the 8.04 carat sapphire is natural, Vivid Blue (GRS type "Royal Blue") colour, of Burmese origin, with no indication of thermal treatment.

Tiancheng International. MID-SEASON AUCTION, Jewellery and Jadeite, 2 Oct 2017 · 1 pm