29 avril 2017
Important diamond ring
Lot 321. Important 18.82 carats type IIa diamond ring. Estimate 810,000 — 1,210,000 CHF . Photo: Sotheby's. Set with a step-cut diamond weighing 18.82 carats, size 49, sizing band, French assay and maker's marks. Accompanied by GIA report no. 5181230004,...