Lot 1678. Important 27.71 carats Burmese 'Royal Blue' Sapphire and Diamond Ring. Estimate 6,300,000 — 7,500,000 HKD. Photo: Sotheby's.

Set with an octagonal sapphire weighing 27.71 carats, the mount decorated with circular-cut and baguette diamonds, mounted in 18 karat white gold. Ring size: 5½

Accompanied by Gübelin and SSEF reports numbered 16038033 and 84618, dated 18 March 2016 and 9 March 2016 respectively, stating that the 27.71 carat sapphire is natural, of Burmese (Myanmar) origin, with no indications of heating, and the colour may also be called 'Royal Blue' in the trade. Also accompanied by a SSEF Folio Report. 

Sotheby's. Magnificent Jewels & Jadeite, Hong Kong, 04 Oct 2016, 02:00 PM