Lot 356. Superb 33.63 carats VVS1 Clarity type IIa fancy light pink diamond ring, Harry Winston, circa 1970. Estimate 7,900,000 — 13,700,000 CHF. Lot sold 12,647,000 CHF. Photo: Sotheby's.

Set with a step-cut fancy light pink diamond weighing 33.63 carats, between tapered baguette diamond shoulders, size 51, signed Winston. 

Accompanied by GIA report no. 5182581381, stating that the diamond is Fancy Light Pink, Natural Colour, VVS1 Clarity, together with a type IIa classification letter; also accompanied by a Gübelin report and a copy of Service Public du Contrôle des Diamants, Perles Fines, Pierres Précieuses report no. 2128, dated 12 May 1970.

Provenance: This magnificent and extremely elegant pink diamond has been treasured  in the same European noble family for over forty five years.

Sotheby's. Magnificent Jewels and Noble Jewels, Geneva, 15 Nov 2017, 10:30 AM