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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists report creating pure hexagonal diamond, resolving a long debate about the rare meteorite mineral lonsdaleite. (CREDIT: ...

Add Yahoo as a preferred source to see more of our stories on Google. Conventional diamond, called cubic diamond, is known as the hardest substance in the world. But researchers think hexagonal ...