The Mohs Scale is a system created by Friedrich Moss in 1812, to measure the hardness of crystals. The scale goes as followed:
1. TALCUM- Scratched by all other minerals and easily marked with fingernails.
2. GYPSUM- Can be scratched with a fingernail using greater pressure than needed to scratch a number one material.
3. Calcite- Can be scratched with a sharp coin.
4. Fluorite- Can be scratched with a penknife blade.
5. Apatite- Can be scratched with difficulty using steel point.
6. Feldspar- Will easily scratch glass.
7. Quartz- Will scratch most common surfaces.
8. Topaz- Can scratch quartz.
9. Corundum- Easily scratches topaz and quartz.
10. Diamond- The hardest natural substance.
Knowing how hard a crystal is can be very useful for storing as well as identifying them.
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Crystal guide
ParanormalThis book will only be for me to note what i have learned thus far of crystals from reading from other books, none of this is mine of my own and i will credit the sources as i keep learning.
