A stunning pair of coloured diamond and diamond ear pendants. photo Sotheby's Each set with a heart-shaped fancy deep blue diamond weighing 2.48 and 2.03 carats, suspending a detachable pear-shaped diamond weighing 10.12 and 9.64 carats, mounted in platinum,...

Magnificent Fancy Vivid Green diamond ring Claw-set with a cushion modified brilliant-cut fancy vivid green diamond weighing 2.52 carats, to a plain platinum and yellow gold mount, size 51. Est. 3,300,000—5,450,000 CHF Hammer Price with Buyer's Premium:...

A fancy deep blue diamond and diamond ring The square step-cut fancy deep blue diamond, weighing 1.75 carats, within a surround set with brilliant-cut diamonds of pink hue, between tapered baguette-cut diamonds, mounted in 18k white gold and platinum,...