A magnificent Type IIa 50.62 carats marquise-cut diamond pendant necklace. Estimate HK$38,000,000 – HK$58,000,000 ($4,923,671 – $7,515,077). Photo Christie’s Image Ltd 2014
The marquise-cut diamond weighing 50.62 carats, within a stylized surmount of marquise-cut diamonds within a brilliant-cut diamond surround, suspended from a double-strand neckchain accented by collet-set marquise and brilliant-cut diamonds, mounted in 18k white gold, 43.0 cm long (length adjustable)
Accompanied by report no. 1142327773 dated 25 september 2014 from the Gemological Institute of America stating that the 50.62 carat diamond is d colour, vvs2 clarity; accompanied by a working diagram indicating that the diamond is potentially internally flawless
Also accompanied by a supplemental letter from the Gemological Institute of America stating that the 50.62 carat diamond has been determined to be type IIa. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency. type iia diamonds were first identified as originating from India (particularly from the Golconda region) but have since been recovered in all major diamond-producing regions of the world. Among famous gem diamonds, the 530.20 carat Cullinan I and the 105.60 carat Koh-I-Noor, are examples of Type IIa.
CHRISTIE’S. HONG KONG MAGNIFICENT JEWELS, 25 November 2014, Convention Hall