Important marquise brilliant-cut diamond ring. Photo Sotheby's

Simply set with a modified marquise brilliant-cut diamond weighing 14.12 carats, to a mount set with brilliant-cut diamonds extending to the shoulders, mounted in platinum. ESTIMATION 16,000,000-20,000,000 HKD

NOTE: Ring size:5¾

Accompanied by GIA report numbered 2135912001, dated 10 November 2011, stating that the 14.12 carat diamond is D colour, Internally Flawless clarity; 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. Further accompanied by Gübelin report numbered 11110083, dated 30 November 2011, stating that the 14.12 carat diamond is D colour, Internally Flawless clarity; also accompanied by notes and appendix stating that the diamond is classified as a Type IIa. "Diamonds of this type, exhibiting an antique cutting style as well as superior quality, are very rare and will most certainly evoke references to the historic term of 'Golconda'."

Sotheby's. Magnificent Jewels and Jadeite. Hong Kong | 03 avr. 2012 www.sothebys.com