A diamond solitaire ring centering a round brilliant-cut diamond, with a micro pavé-set diamond surround and mount; central diamond weighing approximately: 3.00 carats; mounted in fourteen karat bicolor gold; size: 6 1/4. Sold for $12,000 Bonhams. Fine...

A diamond solitaire ring centering a radiant-cut diamond, weighing 2.54 carats, with baguette-cut diamond shoulders in a surround of pavé-set round brilliant diamonds; completed by a split shank band; mounted in eighteen karat bicolor gold; size: 6 1/2.-...

A diamond solitaire ring centering a cushion-cut diamond within a single-tiered frame of round brilliant-cut diamonds, completed by an openwork bridge and a pavé-set diamond band; central diamond weighing approximately: 4.15 carats; mounted in fourteen...

A marquise-cut 6.00 carats diamond solitaire ring centering a marquise-cut diamond, weighing 6.00 carats, flanked by graduated baguette-cut diamond shoulders in a simple mount; mounted in platinum; size: 7 1/4. Sold for $14,400 Accompanied by GIA Gem...

A diamond solitaire ring the rectangular-cut diamond, weighing 14.17 carats, with fancy-cut diamond shoulders and a plain mount; mounted in platinum. Estimate: $450,000 - 500,000 (Copyright © 2002-2008 Bonhams 1793 Ltd., Images and Text All Rights Reserved)...

A fancy colored diamond solitaire ring the rectangular-cut fancy yellow diamond, weighing 9.71 carats, with baguette-cut diamond shoulders and a plain mount; mounted in platinum. Estimate: $70,000 - 90,000 (Copyright © 2002-2008 Bonhams 1793 Ltd., Images...