Mohs scale of mineral hardness

The Mohs Scale of Mineral Hardness is a way to measure how hard certain minerals are. It rates minerals from 1 to 10, with 1 being the softest and 10 being the hardest. For example, talc, which is a soft mineral like baby powder, would get a 1 on the Mohs Scale of Mineral Hardness, and a diamond, which is one of the hardest minerals, would get a 10. When two minerals rub against each other, the harder one will scratch the softer one. That is why the Mohs Scale of Mineral Hardness is useful.