Important diamond necklace, Cartier - Photo Sotheby's

The front designed as three tiers of brilliant-cut and baguette diamonds brought together at the centre with carré-cut stones, suspending a briolette diamond weighing 20.30 carats, the back designed as a row of brilliant-cut stones, the clasp set with a marquise-shaped diamond, length of shortest row approximately 400mm, signed Cartier Paris and numbered, French assay and maker's marks, case signed Cartier. Estimate: 335,000 - 525,000 CHF - Lot Sold: 410,500 CHF

Accompanied by GIA report no. 2145896940, stating that the 20.30 carat diamond is W to X range Colour, SI1 Clarity.

Sotheby's. Magnificent Jewels. Geneva | 14 Nov 2012 www.sothebys.com