Lot 326. Important 32.42 carats type IIb diamond ring, Harry Winston. Estimate 1,510,000 — 2,510,000 CHF. Photo: Sotheby's.

Set with a pear-shaped diamond weighing 32.42 carats, between tapered baguette diamond shoulders, size 49, signed Winston, maker's mark.  

Accompanied by GIA report no. 667088, stating that the diamond is D Colour, VVS1 Clarity, together with a working diagram stating that the diamond may be internally flawless after minor repolishing, and a type IIb classification letter.