Platinum, Emerald and Diamond Ring - Photo Sotheby's

Centered by an emerald-cut emerald weighing 7.47 carats, flanked by two trapeze-shaped diamonds weighing approximately 1.00 carat, size 6¼. Estimation: 275,000 - 325,000 USD

Accompanied by two gemological reports:
AGL report no. CS 47514 stating the emerald is of Colombian origin, clarity enhancement: none.
Gübelin report no. 12015088 stating the emerald is of Colombian origin, with no indications of clarity enhancement

Sotheby's. Magnificent Jewels. New York | 05 déc. 2012, www.sothebys.com