Lot 2048. A rare 13.77 carats Type IIa diamond ring, by Cartier. Estimate HKD 12,000,000 - HKD 18,000,000 (US$1,500,000-2,300,000) © Christie's Images Ltd 2017

The pear-shaped diamond, weighing approximately 13.77 carats, flanked by tapered baguette-cut diamonds, mounted in platinum, ring size 4. Signed Cartier, no. 61-71576

Accompanied by report no. 14139041 dated 26 October 2015 from the GIA Gemological Institute of America stating that the diamond is D colour, internally flawless clarity

Report no. 0501005 dated 10 January 2005 from the belin GemLab stating that the diamond is D colour, internally flawless clarity; also accompanied by a note and appendix stating that based on its infrared spectrum, the 13.77 carat diamond is classified as Type IIa. Additionally this 13.77 carat diamond was examined by the Gübelin GemLab prior to re-polishing, when the diamond weighed 14.19 carat. This diamond presently possesses a pear-shape brilliant cutting style consistent with the former antique cutting style which the diamond had when it was originally submitted. Diamonds of this type, exhibiting a fine quality, are rare and will most certainly evoke references to the historic term of "Golconda"

Please note that one report is more than 3 years old and might require an update

Christie's. Hong Kong Magnificent Jewels, 30 May 2017, Convention Hall