Lot 1650. Fine 29.20 carats "Royal Blue" Burmese sapphire and diamond ring. Estimate 3,200,000 — 4,700,000 HKD. Lot sold 4,220,000 HKD. Photo: Sotheby's 2011.

Centring on an oval sapphire weighing 29.20 carats, framed by brilliant-cut diamonds, extending to the basket and shoulders, the diamonds together weighing approximately 2.75 carats, mounted in platinum.

Ring size: 6¾

Accompanied by Gübelin report numbered 0807216, dated 28 August 2008, stating that the sapphire is natural, of Burmese (Myanmar) origin, "Royal Blue" colour, with no indications of heating.

Sotheby's. Jewels and Jadeite, Hong Kong, 06 Apr 2011