Rock & Gem
IS THE MOHS SCALE STIL USED TODAY?
The Mohs Scale is still a useful and important tool. All minerals today are given a Mohs hardness number that shows where they rank next to the ten minerals on the scale. Most fall within a range. For instance, tourmaline is ranked Mohs hardness 7.0 to 7.5. Garnet is ranked 6.5 to 7.5.