A diamond single-stone ring. photo courtesy Bonham's

The claw-set pear-shaped diamond, weighing 5.00 carats, to a plain hoop, ring size D.. Estimate: £80,000 - 100,000 - Unsold

Footnote: Accompanied by a copy of a GIA certificate stating that the diamond is D colour, VS2 clarity. Certificate number 8342229, dated 5th April 1993.

Bonham's. Fine Jewellery, 22 Sep 2010. New Bond Street www.bonhams.com