The 100-carat Emerald-cut perfect diamond joins five similarly rare stones in auction history. (Photo courtesy Sotheby’s) Today, Sotheby’s announced that a rare Emerald-cut 100.2-carat perfect diamond ...

NEW YORK — A “perfect” diamond said to be so large that it draws awe-struck people across a room has sold for $22 million at a Sotheby’s auction in New York. The 100-carat, emerald cut, D color, ...

Debuting in the world of diamonds could be intimidating for newbies. Shiny valuable stones in various sizes and shapes like round, oval, princess, pear, emerald, cushion with confusing terminologies ...