Mohs Hardness | Substance and Elements |
0.2 | Caesium |
0.3 | Rubidium |
0.4 | Potassium |
0.5 | Sodium |
0.6 | Lithium |
1 | Talc |
1.2 | Indium |
1.2 | Thallium |
1.25 | Barium |
1.5 | Gallium |
1.5 | Strontium |
1.5 | Lead |
1.75 | Calcium |
1-2 | Graphite |
1-2.5 | Magnesium |
1.5-2.5 | Sulfur |
2 | Selenium |
2 | Cadmium |
2.25 | Bismuth |
2.25 | Tellurium |
2-2.5 | Kaolin |
2.5 | Gold |
2.5 | Silver |
2.5 | Zinc |
2.5 | Lanthanum |
2.5 | Cerium |
2.75 | Galena |
2.75 | Aluminium |
2-3 | Mica |
2.5-3 | Asbestos |
3 | Calcite |
3 | Copper |
3 | Antimony |
3 | Thorium |
3-3.5 | Baryte |
3.5 | Arsenic |
3.5 | Platinum |
3.5-4 | Dolomite |
4 | Fluorite |
4 | Iron |
4 | Nickel |
4.75 | Palladium |
4.5-5 | Calamine |
5 | Apatite |
5 | Zirconium |
5 | Cobalt |
5.5 | Beryllium |
5.5 | Molybdenum |
5.5 | Hafnium |
5-6 | Hornblende |
5.5-6 | Opal |
5.5-6 | Augite |
5.5-6.5 | Magnetite |
5.5-6.5 | Hematite |
6 | Niobium |
6 | Rhodium |
6 | Titanium |
6 | Manganese |
6.25 | Germanium |
6-6.5 | Pyrite |
6-6.5 | Feldspar |
6.5 | Silicon |
6.5 | Ruthenium |
6.5 | Iridium |
6.5 | Tantalum |
6.5 | Tanzanite |
6.7 | Vanadium |
6.5-7 | Peridot |
6.5-7 | Agate |
6.5-7.5 | Garnet |
6.5-7.5 | Andalusite |
7 | Silica |
7 | Osmium |
7 | Quartz |
7 | Rhenium |
7-7.5 | Tourmaline |
7.5 | Tungsten |
7.5-8 | Emerald |
7.5-8 | Spinel |
7.5-8 | Beryl |
8 | Topaz |
9 | Chromium |
9 | Corundum |
9 | Sapphire |
9.3 | Boron |
10 | Diamond |
10 | Carbonado |