A colored diamond and diamond ring. Photo Christie's Image Ltd 2014

Set with a cushion-cut yellowish brown diamond, weighing approximately 6.61 carats, to the single-cut diamond gallery and half-hoop, mounted in 18k rose gold. Estimate $70,000 – $100,000

Christie's. MAGNIFICENT JEWELS, 16 April 2014, New York, Rockefeller Plaza -www.christies.com