Diamond ring. Photo courtesy Sotheby's. 

Centring on a heart-shaped diamond weighing 10.32 carats, mounted in 18 karat white gold. Ring size: 5½. Estimation 5,500,000 — 6,500,000 HKD

Accompanied by GIA report numbered 2145850248, dated 25 July 2012, stating that the 10.32 carat diamond is D colour, Internally Flawless clarity; further accompanied by diamond type classification report stating that the diamond is determined to be a Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency.

Sotheby's. Fine Timepieces & Jewels. Hong Kong | 06 Dec 2013 _ www.sothebys.com