A 16.64 carats fancy colored diamond ring. Estimate US$ 225,000 - 325,000 (€210,000 - 300,000). Photo: Bonhams.

set with a fancy yellow cut-cornered rectangular modified brilliant-cut diamond, weighing 16.64 carats, within a polished gold mount with split shank, enhanced by circular yellow-cut diamonds; mounted in 18k gold; size 5 1/2 (smaller yellow diamonds untested for origin of color)

Accompanied by GIA report #1156550886, dated July 11, 2013, stating: natural, fancy yellow color, VS1 clarity.

Bonhams. FINE JEWELLERY, 15 Apr 2015 14:00 EDT - NEW YORK