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

Researchers have synthesized millimetre-scale hexagonal diamond, a crystal structure so elusive that many physicists doubted ...

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

Scientists created a pure hexagonal diamond in the lab, confirming a long-debated carbon structure slightly harder than ...

Atomic structure of the hexagonal diamond. Image from the study. Researchers named it lonsdaleite, after crystallographer ...