The Mohs scale measures the hardness of minerals, on a scale of 1 to 10. Examples : 1 is the lowest (for example, Talc), 10 is the highest (for example, Diamond.)
The idea is that harder materials can scratch softer materials.
This scale was proposed by the Austrian geologist Friderich Mohs.
It's called the Ore
scale
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
The hardness is 3-4 on Mohs scale.
Nickel has a hardness of 4 on the Mohs scale.
Topaz is number 8 on the Mohs scale.
The Mohs scale compares the hardness of an object or substance.
The softest material in the mohs scale is talc
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
Granite is not assigned a number on the Mohs scale of hardness. The Mohs scale is a measurement of the relative hardness of minerals. Because granite is a rock composed of a variety of minerals, only the individual minerals which compose it have a Mohs hardness.
Friedrich Mohs is famous for creating the Mohs scale of mineral hardness. He formulated a scale of one to ten and assigned each mineral a value. This eventually became the basis for the Mohs scale.