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Lot 486. Attractive 14.18 carats step-cut fancy blue diamond ringEstimate 2,880,000 — 4,800,000 CHF (2,632,078 - 4,386,797 EUR). Photo Sotheby's

Set with a step-cut fancy blue diamond weighing 14.18 carats, on a mount set with brilliant-cut diamonds, size 521/2. 

Accompanied by GIA report no. 14138150, stating that the diamond is Fancy Blue, Natural Colour, VVS2 Clarity. 

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 17 mai 2016, 10:00 AM