Mohs hardness scale is a relative scale used to judge the hardness of minerals and gemstones. It is the creation of French mineralogist Friedrich Mohs.

Every mineral, stone, or gemstone can scratch or be scratched by another. A softer one can be scratched by a harder one - and not the other way around. In the simplest terms: the higher the number, the harder the substan

1. Talc
2. Gypsum
3. Calcite
4. Fluorite
5. Apatite
6. Orthoclase
7. Quartz
8. Topaz
9. Corundum (Ruby ans Sapphires)
10. Diamond