Platinum, jadeite and diamond ring. Photo: Sotheby's.

The oval-shaped jadeite cabochon measuring approximately 17.0 by 11.9 by 5.3 mm, framed by round diamonds weighing approximately 1.60 carats, size 6¼. Estimation 18,000 — 22,000 USD 

Accompanied by AGL report no. CS 53501 stating that the jadeite is natural, with no indications of impregnation. 

Sotheby's. Important Jewels. New York | 24 sept. 2013 - http://www.sothebys.com