Lab frown diamonds look identical to natural ones, but with the right cues and clarity checks, you can learn exactly how to ...

UC Santa Cruz researchers explore diamond-based sensors that could transform how future U.S. fusion reactors track plasma.

An Oklahoma family finds a 2.79-carat brown diamond at Crater of Diamonds, Arkansas, during a birthday celebration stop. Luck ...

For decades, the diamond world has relied on a simple assumption: that mined stones are inherently superior, rarer, and more ...