The two brilliant-cut diamonds weighing 6.26 and 6.19 carats respectively.

Accompanied by GIA reports stating that the 6.26 and 6.19 carat diamonds are both D Colour, Flawless, with Excellent Cut, Polish and Symmetry; further accompanied by two diamond type classification reports stating that both diamonds are determined to be 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, 03 oct. 2017, 01:30 PM