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

Unsure of whether your sparkler is a synthetic? Turn to one of these methods to check. Reviewed by Sandy Ip When you're first examining your own diamond or that of a loved one, you may take notice of ...

Jewelry designer Nina Runsdorf was at a trade show in the early 2000s when a “large brown rock” the size of a pebble caught her eye. The seller told her it was a rough brown diamond. Runsdorf, in ...