A diamond solitaire ring. Photo Bonhams the cut-cornered modified rectangular-cut diamond, weighing 9.05 carats, with trapezoid-shaped diamond shoulders and a plain mount;remaining diamonds weighing approximately: 1.05 carats total; mounted in platinum;...

An impressive fancy yellow diamond ring Set with a cut-cornered modified rectangular-cut fancy yellow diamond, weighing approximately 46.72 carats, flanked on either side by a trillion-cut diamond, mounted in 18k yellow gold and platinum. Estimate $500,000...