After decades of debate, researchers say that they have found the clearest evidence yet for this rare form of carbon ...

Researchers made small, pure samples of the elusive mineral lonsdaleite – also known as hexagonal diamond — and tested its ...

Scientists create first-of-its-kind ‘hexagonal diamond’ harder than real thing - Material exhibits slightly higher hardness than naturally found diamond ...

Save money on lab-grown diamonds. Check out these styles from high-quality, budget-friendly brands like With Clarity, ...

Oval engagement rings are a classic choice for a reason. We break down everything to know about the popular cut from its history to unique setting choices for the stone.

“These findings resolve the long-standing controversy on the existence of hexagonal diamond,” researchers said.

To misquote a famous song, "Diamonds are industry's best friend." Cubic diamond is the hardest mineral on Earth and is used in everything from precision cutting tools to high-performance ...

The Florentine Diamond, long thought lost, has finally resurfaced. Turns out, the historic gem was never missing, but locked away in a bank vault in Canada since World War II, according to a November ...

The priciest-ever online sale of a single diamond was completed last month — and the buyer believes he got a bargain on the gem. A 59-year-old businessman from the Midwest bought a massive diamond ...

A rare bi-colored pink diamond of “astounding weight” was found at the Karowe diamond mine in Botswana, according to the Gemological Institute of America. Lucara Diamond A rare rough, or uncut, pink ...