A sudden release of pressure allowed a copper-based compound to superconduct at the highest temperature yet for atmospheric ...

Researchers have produced nearly pure hexagonal diamond, a material long theorized to be harder than conventional diamond, by ...

An international research team has produced a bulk, millimeter-scale hexagonal diamond in the laboratory, a crystal variant long theorized to rival or exceed the hardness of the cubic diamonds found ...

Small, shiny flecks of carbon discovered in rocks in Arizona’s Canyon Diablo in 1967 may have been chemically identical to conventional diamonds, but physically they were strikingly different. The ...