Lot 363. Magnificent Platinum and 22.30 carats D color, Internally Flawless Type lla Diamond Ring. Estimate $2,800,000 — 3,200,000 (2,544,784 - 2,908,324 EUR). Lot sold 3,250,000 USD. Photo: Sotheby's.

Centering an oval-shaped diamond weighing 22.30 carats, size 5¾, numbered 2229.

Accompanied by GIA report no. 2175050992 stating that the diamond is D color, Internally Flawless. Together with a letter from the GIA stating that the diamond has been determined to be Type lla. 

Sotheby's. Magnificent Jewels, New York, 21 avr. 2015, 10:00 AM