Lot 1844. Important 6.01 carats Burmese Ruby and 4.25 carats Type IIa Diamond Ring. Estimation on request© Sotheby’s

Of toi et moi design, set with a cushion-shaped ruby and diamond weighing 6.01 and 4.25 carats respectively, to the circular-cut diamond gallery and shoulders, mounted in 18 karat white gold. Ring size: 5½ 

Accompanied by AGL report numbered CS 69608, dated 11 August 2015, stating that the 6.01 carat ruby is natural, of Burmese (Myanmar) origin, with no gemmological evidence of heat; also accompanied by GIA report numbered 2185055504, dated 6 December 2016, stating that the 4.25 carat diamond is D Colour, Internally Flawless; further accompanied by a 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 diamonds and often have exceptional optical transparency.

Sotheby's. Magnificent Jewels and Jadeite, Hong Kong, 03 oct. 2017, 01:30 PM