The scale is not linear, and isn't too precise when measuring the hardness of certain industrial materials.
Hardness
The Mohs scale uses the hardness of minerals to classify them from 1 to 10. It was named after the German geologist Carl Friedrich Christian Mohs.
Relative hardness is the property of minerals that uses the Mohs scale for classification.
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
The Mohs scale is used to determine the relative hardness of minerals.
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.
It's called the Ore
Pumice has a hardness of about 6 on the Mohs scale of mineral hardness.
The Mohs scale of hardness is used to determine the relative hardness of minerals by scratching one against another. It is commonly used in geology to identify minerals based on their hardness and to assess their suitability for different applications such as in construction, jewelry, and industrial uses.
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.