Platinum, Emerald and Diamond Ring - Photo Sotheby's

Centered by an oval-shaped cabochon emerald weighing 15.22 carats, flanked by two oval-shaped diamonds weighing .74 and .73 carats, respectively, size 6¼. Estimation: 350,000 - 450,000 USD

Accompanied by three gemological reports:
AGL report no. CS 50706 stating the emerald is of Classic Colombian origin, clarity enhancement: none. Together
with a letter from the AGL signifying the rarity of this quality emerald.
GIA report no. 2115923052 stating the .74 carat diamond is D color, VS1 clarity.
GIA report no. 2115923053 stating the .73 carat diamond is D color, VS1 clarity.

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