Mohs scale of mineral hardness
Revision as of 17:07, 13 August 2009 by Raminagrobis (talk | contribs)
To determine the hardness of a mineral or a hone, we are using the scale of mineral hardness by Friedrich Mohs. It is based on "what scratches what".
Substance or Mineral | Hardness |
---|---|
Diamond | 10 |
Corundum (Al2O3) | 9 |
Carborundum (SiC) | 9 |
Ruby | 9 |
Saphire | 9 |
Chrysoberyll | 8,5 |
Spinell | 8 |
Topaz | 8 |
Beryll | 7,5 - 8 |
Emerald | 7,5 - 8 |
Wolfram | 7,5 |
Garnet | 7- 7,5 |
Zircon | 6,5 - 7,5 |
Amethyst | 7 |
Quartz | 7 |
Citrin | 7 |
Tiger Eye | 7 |
Agate | 6,5 -7 |
Jadeit | 6,5 - 7 |
Jaspis | 6,5 - 7 |
Carneol | 6,5 - 7 |
Moss-Agate | 6,5 - 7 |
Onyx-Chalcedon | 6,5 - 7 |
Labradorit | 6 - 6,5 |
Moon stone | 6 - 6,5 |
Pyrite | 6 - 6,5 |
Titan | 6 |
Haematite | 5,5 - 6,5 |
Opal | 5,5 - 6,5 |
Beryllonit | 5,5 - 6 |
Glass | 5 - 7 |
Lapislazuli | 5 - 6 |
Obsidian | 5 - 5,5 |
Turquoise | 5 -6 |
Iron | 4,5 |
Platinum | 4,3 |
Rhodochrosit | 4 |
Nickel | 3,8 |
Malachite | 3,5 - 4 |
Coral | 3 - 4 |
Pearl | 3 - 4 |
Calcit | 3 |
Silver | 2,7 |
Jet | 2,5 - 3,5 |
Gold | 2,5 - 3 |
Copper | 2,5 - 3 |
Zinc | 2,5 |
Seafoam | 2 - 2,5 |
Amber | 2 - 2,5 |
Ivory | 2 - 3 |
Alabaster | 2 |
Tin | 1,8 |
Horn | 1,5 - 2,5 |
Lead | 1,2 |
More information about this scale can be found in RTENOTITLE.