Lot 1845. Important 29.87 carats Burmese  Sapphire and Diamond Ring, Bulgari. Estimate 10,500,000 — 15,000,000 HKD. Photo: Sotheby's.

Set with an oval sapphire weighing 29.87 carats, flanked by two shield-shaped diamonds weighing approximately 1.20 carats in total, mounted in platinum, signed Bulgari. Ring size: 5¼.

Accompanied by Gübelin and SSEF reports numbered 17075023 and 89934, dated 18 July 2017 and 23 January 2017 respectively, stating that the 29.87 carat sapphire is natural, of Burmese (Myanmar) origin, with no indications of heating, and the colour of this sapphire may also be called 'royal blue' based on Gübelin and SSEF reference standards. Also accompanied by SSEF Appendix letter stating that 'The natural sapphire...exhibits an impressive size and weight...combined with a highly attractive and saturated colour and a very fine purity. A natural sapphire from Burma of this size and quality is rare and exceptional.'; further accompanied by a SSEF folio report.

Sotheby's. Magnificent Jewels and Jadeite, Hong Kong, 03 oct. 2017, 01:30 PM