A fancy-coloured diamond single-stone ring. Photo: Bonhams. The heart-shaped diamond, weighing 11.19 carats, between colourless pear-shaped diamond shoulders, remaining diamonds approximately 0.60 carat total, ring size M½. Estimate £25,000 - 35,000 (€30,000...

A colored diamond and diamond ring. Photo Christie's Image Ltd 2014 Set with a pear-shaped fancy deep brownish greenish yellow diamond, weighing approximately 10.03 carats, to the circular-cut diamond flower blossom cluster surround and shoulders, mounted...

An oval-cut yellow colored diamond ring. Photo Christie's Image Ltd 2014 Set with an oval-cut fancy deep brownish greenish yellow diamond, weighing approximately 5.01 carats, within a circular-cut yellow diamond surround, to the circular-cut yellow diamond...