Important diamond ring. Photo: Sotheby's. 

Simply set with a pear-shaped diamond weighing 17.74 carats, mounted in 18 karat white gold. Ring size: 5¼. Estimation 19,000,000 - 21,000,000 HKD (1,837,988 - 2,031,461 EUR)

Accompanied by GIA report numbered 2155472423, dated 28 May 2013, stating that the 17.74 carat diamond is D colour, Internally Flawless clarity, with Excellent Polish and Symmetry; also 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. Magnificent Jewels and Jadeite. Hong Kong | 07 oct. 2013 - http://www.sothebys.com