Lot 33. A 27.91 carats octagonal step-cut Colombian emerald and diamond ring, by Harry Winston. Estimate CHF 200,000 - CHF 250,000 (USD 202,326 - USD 252,907). Photo Christie's Images Ltd 2016.

Set with an octagonal step-cut emerald, weighing approximately 27.91 carats, between triangular-cut diamond shoulders, ring size 6 ½, with French assay marks for platinum and gold. Signed HW for Harry Winston

Accompanied by report no. 87498 dated 1 September 2016 from the SSEF Swiss Gemmological Institute stating that the origin of the emerald is Colombia, with minor amount of oil.

Christie's. Geneva Magnificent Jewels, 15 November 2016, Geneva