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Mohs Hardness Scale

Some must-know objects and their hardness on the Mohs Hardness scale.

QuestionAnswer
1 Mohs Hardness Talc
2 Mohs Hardness Gypsum
3 Mohs Hardness Calcite
4 Mohs Hardness Fluorite
5 Mohs Hardness Apatite
6 Mohs Hardness Orthoclase Feldspar
7 Mohs Hardness Quartz
8 Mohs Hardness Topaz
9 Mohs Hardness Corundum
10 Mohs Hardness Diamond
Common 2.5 Mohs Hardness Fingernail
Common 3 Mohs Hardness Penny
Common 5.5-6 Mohs Hardness Knife Blade
Created by: j.miura
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