A diamond single-stone ring. Photo courtesy Bonhams.

The old brilliant-cut diamond, weighing 9.35 carats, in a four-claw mount set with brilliant-cut, baguette-cut and bullet-shaped diamonds, ring size K½. Estimate £80,000 - 120,000 (€97,000 - 150,000)

Accompanied by a report from GIA stating that the diamond weighing 9.35 carats is J colour, VS1 clarity. Report number 6157730201, dated 17 October 2013. 

Bonhams. FINE JEWELLERY INCLUDING SELECTED JEWELS FROM THE COLLECTION OF BARBARA TAYLOR BRADFORD. London, New Bond Street. 5 Dec 2013 -www.bonhams.com