What is the Mohs Scale of Hardness? Everything You Should Know

The Mohs Hardness Scale is a ten-number set that tests minerals and informs us about their hardness. On a Mohs scale of 1–10, 1 is the lowest level of hardness, and 10 is the highest. Diamond has a Mohs hardness level of 10, i.e., it has the highest hardness level. You can always refer to the standard Mohs scale of hardness chart for some reference.