Red spinel and diamond ring. Photo Tiancheng International.

Centring on a cushion-shaped red spinel weighing 15.47 carats, surrounded by pear-shaped and brilliant-cut diamonds, the diamonds together weighing approximately 4.85 carats, mounted in 18 karat white gold. Ring size: 6½. Estimate: HK$160,000 - 200,000 (US$20,500 - 25,500). Sold for HK$188,80

Accompanied by GRS report numbered GRS2011-050084T, dated 10 May 2011, stating that the 15.47 carat spinel is natural, Deep Red colour, of Burmese origin, with no indication of treatment.

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