Important Diamond ring, Cartier. Sold 2,625,000 CHF at Sotheby's Geneva, 14 Nov 2007, lot 378. 

Set with a marquise-shaped diamond weighing 22.25 carats, between tapered baguette diamond shoulders, mounted in platinum, signed Cartier Paris, French assay and maker's marks. size 52.

Accompanied by GIA report no. 16213414 stating that the diamond is D Colour, VVS2 Clarity and additional GIA worksheet stating that the stone is Potentially Flawless after repolishing.