Difference between revisions of "Mohs scale of mineral hardness"
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Revision as of 12:17, 13 August 2009
Mohs scale of mineral hardness -- 0livia 16:06, 13 August 2009 (UTC)
To determine the hardness of a mineral or a hone,
we're using the scale of mineral hardness by Friedrich Mohs
Its based on "what scratches what".
Diamond | 10
Corundum | 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 about it here: http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness