Spectacular emerald and diamond ring - Photo Sotheby's.

The cushion-shaped emerald weighing 17.61 carats, set between trapeze diamond shoulders, the band partially set with brilliant-cut stones, size 52. Estimation: 420,000 - 610,000 CHF

Accompanied by Gübelin report no. 12055200 and AGL report no. CS 49757, both stating that the emerald is of Colombian origin, with no indications of clarity modification.

Sotheby's. Magnificent Jewels. Genève | 14 nov. 2012 www.sothebys.com