18 Karat two-color gold, irradiated diamond and near colorless diamond ring, Buccellati. Photo Sotheby's

Centered by an oval diamond of irradiated fancy vivid yellow color weighing 1.00 carat, within an openwork textured gold frame set with marquise-shaped near colorless diamonds weighing approximately 1.00 carat, size 5¼, signed Gianmaria Buccellati, Italy, with maker's mark. Estimate 5,000 — 7,000. Lot Sold: 7,500 USD

Accompanied by GIA report no. 5131083317 stating that the diamond is Artificially Irradiated, Fancy Vivid Yellow, SI2 clarity.

Sotheby's. Important Jewels. New York | 20 Sep 2012 - www.sothebys.com