Researchers in China say they have produced hexagonal diamond, a long-disputed form of carbon that theory predicts could be ...

A Matryoshka diamond, the first of its kind, was discovered in a diamond mine in Russia. An air pocket nestled inside the diamond contains an even tinier diamond that rattles when shook. Scientists ...

When it comes to knowing what actually lies deep inside the Earth, diamonds are a geologist’s best friend. The diamond bearing the telltale mineral inclusion came from a Botswana mine and formed at ...

Diamond stands up to a squeeze. Surprisingly, the material’s structure persists even when compressed to 2 trillion pascals, more than five times the pressure in Earth’s core, scientists report January ...

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