Determining the authenticity of a diamond requires professional equipment and a highly trained eye. At-home tests do ...

Cubic zirconia is a type of diamond simulant — a “fake diamond” — that is extremely affordable. However, it doesn’t hold any value over time like a real diamond and loses its luster in just a few ...

NEW YORK (AP) — A Manhattan diamond dealer with a history of gemstone fraud was indicted Thursday in what officials describe as a scheme to swindle his fellow merchants out of nearly half a million ...