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Lot 168. An important 30.05 carats Colombia octagonal step-cut emerald and diamond ring, by Van Cleef & Arpels. Estimate CHF600,000 – CHF800,000 ($622,206 - $829,609). Photo Christie's Image Ltd 2016. 

Set with an octagonal step-cut emerald, weighing approximately 30.05 carats, between rectangular-cut diamond shoulders, ring size 5, with French assay mark for gold, in grey suede Van Cleef & Arpels case. Signed Van Cleef & Arpels, no. M37935

Accompanied by report no. 84068 dated 9 February 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, 18 May 2016, Geneva