Currently, diamond is regarded to be one of the hardest and most scratch-resistant natural materials in the world. Most diamonds found in nature and often used in jewelry display a cubic crystal ...

Diamonds created by an interstellar collision of a dwarf planet and an asteroid could lead to the development of new super-hard materials for tools and production, researchers say. Rare lonsdaleite ...

Diamonds are forever, and they’re also everywhere: in exoplanets, in meteorites, in your mother’s wedding ring. Some, though, are far more exotic than what you’d find in your local mall’s Swarovski.

Carbon comes in many different structures, most famously graphite and diamond. Other forms were predicted to exist at extremely high pressures, but now researchers have examined carbon under the ...