Fine Royal-Blue coloured sapphire and diamond ring. Photo Tiancheng International.

Centring on a cushion-shaped sapphire weighing 9.55 carats, to the shoulders set with calibré- and single-cut diamonds, the diamonds together weighing approximately 3.75 carats, mounted in platinum. Ring size: 5½. Estimate: HK$1,900,000 - 2,300,000 (US$245,000 - 295,000). Sold for HK$2,242,000

Accompanied by Gubélin report numbered 11037036, dated 16 March 2011, stating that the 9.55 carat sapphire is natural, Blue colour, of Burmese origin, with no indications of heating. This colour variety of sapphire may also be called "Royal Blue" in the trade.

Tiancheng International. Jewelry and Jadeite.8 june 2014 - http://www.tianchengauction.com/