Lot 408. A 12.15 carats step-cut diamond ring. Estimate 980,000 — 1,450,000 CHF. Lot sold 1,450,000 CHF. Photo  Sotheby's.

Claw-set with a step-cut diamond weighing 12.15 carats, between tapered baguette diamond shoulders, size 51.

Accompanied by GIA report no. 2175084764, stating that the diamond is D Colour, VVS2 Clarity, together with a working diagram stating that the diamond may be internally flawless after minor repolishing.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 12 mai 2015, 10:30 AM