A square-shaped diamond single-stone ring

A square-shaped diamond single-stone ring

The square-shaped diamond weighing 3.67 carats to the trapezoid-shaped diamond shoulders. Estimate £60,000 - £80,000 ($94,980 - $126,640) 

Accompanied by report No. 12804013 dated 27 August 2003 from the Gemological Institute of America (GIA) stating that the central diamond is D colour, Internally Flawless clarity

Christie's. Jewellery. 10 June 2009. London, King Street www.christies.com