Diamonds are famous for their strength, but scientists have long suspected that another form of diamond might be even harder. Evidence of this was gathered over the past sixty years in meteorite ...

Diamond is famously known as the hardest mineral on Earth. But researchers have been pursuing an unusual variant of it — known as hexagonal diamond — that might be even harder. After decades of claims ...

After decades of debates over the existence and properties of one of the world’s most elusive materials, researchers in China have successfully synthesized a “pure-phase” hexagonal diamond that might ...

After decades of debate, researchers say that they have found the clearest evidence yet for this rare form of carbon. Diamond is famously known as the hardest mineral on Earth. But researchers have ...