A fancy-coloured diamond single-stone ring. Photo Bonhams The step-cut fancy-coloured diamond, weighing 5.84 carats, within a four-claw setting, ring size L. Estimate: £80,000 - 100,000, $ 130,000 - 160,000 Accompanied by a GIA certificate stating that...

A fancy-coloured diamond single-stone ring © 2002-2009 Bonhams 1793 Ltd The fancy-coloured radiant-cut diamond, weighing 9.12 carats, between shield-shaped diamond shoulders, ring size P½, cased. Sold for £120,000 Accompanied by a certificate from GIA...

Lady Houston On Wednesday 9th December Bonhams Bond Street will host The Art of Jewels: Fine Jewellery and Iconic Gems. One of the major highlights of the sale will be a stunning pearl necklace, belonging to Lady Houston, the renowned philanthropist and...