A rare colored diamond and diamond ring. Photo Christie's Image Ltd 2014 Set with a modified cut-cornered rectangular-cut fancy gray-blue diamond, weighing approximately 5.17 carats, flanked on either side by a trapeze-cut diamond, mounted in platinum....

A modified cut-cornered rectangular-cut fancy gray-blue diamond ring. Photo Christie's Image Ltd 2014 Set with a modified cut-cornered rectangular-cut fancy gray-blue diamond, weighing approximately 5.17 carats, flanked on either side by a trapeze-cut...

Platinum, 18 karat gold, fancy colored diamond and diamond pendant necklace. Photo Sotheby's The trio of heart-shaped diamonds anchored by a Fancy Intense Yellow heart-shaped diamond weighing 2.40 carats, topped by a Fancy Gray-Blue heart-shaped diamond...

A colored diamond and diamond pendant necklace. Photo courtesy Bonhams. set with a triangular-cut blue diamond, weighing 1.00 carat, accented by a scrolling pavé-set diamond bail, completed by a fancy link chain; mounted in platinum; length: 18in. Sold...