A marquise-cut diamond weighing 13.37 carats single-stone ring

The marquise-cut diamond weighing 13.37 carats to the baguette-cut diamond shoulders - Estimate: £250,000 - £300,000 ($488,750 - $586,500) - Price realized: £780,450 ($1,532,024)

Accompanied by report No. 17167365 dated 21 April 2008 from the Gemological Institute of America (GIA) stating that the diamond is D colour, VS1 clarity

Christie's London. Jewels - The London Sale. 11 june 2008