Platinum and Briolette Diamond Ring, Jar, Paris - Photo Sotheby's

The briolette diamond weighing 10.28 carats, suspended from a band set with 20 rose-cut and numerous single-cut diamonds, size 3¼, unsigned, with workshop marks and stamped PT950. With signed pouch. Estimation: 250,000 - 350,000 USD

Accompanied by GIA report no. 1142722587 stating the diamond is G color, VS2 clarity.

Sotheby's. Magnificent Jewels from the Collection of Mrs. Charles Wrightsman. New York | 05 déc. 2012 www.sothebys.com