Lot 1673. 13.15 carats Colombian Emerald and Diamond Ring, Monture Cartier. Estimate 2,800,000 — 3,200,000 HKD (357,252 - 408,288 USD). © Sotheby's.

Set with a step-cut emerald weighing 13.15 carats, between baguette diamonds, mounted in platinum, signed Mtd Cartier, size 6½.

Accompanied by SSEF report no. 98350, dated 7 March 2018 and AGL report no. 1089259, dated 13 December 2017, both stating that the emerald is of Colombian origin, with no indications of clarity enhancement. Further accompanied by a gemmological report.