Lot 1888. A Fine Colombian Emerald Ring, weighing 12.85, 3.57 and 3.00 carats. Estimate: 7,000,000-8,000,000 HKD. Lot sold 7,080,000 HKD (903,125 USD). Courtesy Sotheby's.

Set with a step-cut emerald weighing 12.85 carats, flanked by two step-cut emeralds weighing 3.57 and 3.00 carats respectively, mounted in platinum, size 6¾. 

Accompanied by three Gübelin and three SSEF reports, each stating that the emeralds are of Colombian origin, with no indications of clarity enhancement.