Lot 309. Important Platinum and 17.05 carats Diamond Ring. Estimate 600,000 — 800,000 USD. Photo: Sotheby's.

Centering an emerald-cut diamond weighing 17.05 carats, flanked by round and tapered baguette diamonds weighing approximately 1.60 carats, size 8.

Accompanied by GIA report no. 10088373 stating that the diamond is I color, VVS1 clarity. Together with the original working diagram stating that the diamond may be potentially Internally Flawless.

Sotheby's. Magnificent Jewels, New York, 19 Apr 2016, 02:00 PM