Hardness (Mohs’s Scale)
|
1. |
Talc |
Softest |
|
2. |
Gypsum |
|
|
3. |
Calcite |
|
|
4. |
Fluorite |
|
|
5. |
Apatite |
|
|
6. |
Orthoclase |
|
|
7. |
Quartz |
|
|
8. |
Topaz |
|
|
9. |
Corundum |
|
|
10. |
Diamond |
Hardest |