An Ashoka-cut fancy dark brown-greenish yellow diamond, by William Goldberg. Photo Christie's Image Ltd 2014

Set with an Ashoka-cut fancy dark brown-greenish yellow diamond, weighing approximately 5.92 carats, within a circular-cut pink diamond surround, to the circular-cut pink diamond hoop, mounted in 18k rose gold, size 5¾. With maker's mark for William Goldberg. Estimate $100,000 – $150,000

With report 2155471937 dated 29 October 2013 from the Gemological Institute of America stating that the diamond is fancy dark brown-greenish yellow, natural color, SI1 clarity

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