NEW YORK – A “perfect” 100-carat diamond in a classic emerald cut sold for just over $22 million at auction on Tuesday. The internally flawless D color stone is the only classic emerald-cut ...

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 ...