Minerals

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Hardness
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 Mineral
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 Absolute Hardness
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 Image
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1
 Talc (Mg3Si4O10(OH)2)
 1
 external image 100px-Talc_block.jpg
2
 Gypsum (CaSO4·2H2O)
 2
 external image 100px-Gypsum_Australia.jpg
3
 Calcite (CaCO3)
 9
 external image 100px-Calcite-sample2.jpg
4
 Fluorite (CaF2)
 21
 external image 100px-Fluorite_with_Iron_Pyrite.jpg
5
 Apatite (Ca5(PO4)3(OH-,Cl-,F-)
 48
 external image 100px-Apatite_crystals.jpg
6
 Orthoclase (KAlSi3O8)
 72
 external image 100px-Mineraly.sk_-_ortoklas.jpg
7
 Quartz (SiO2)
 100
 external image 100px-USDA_Mineral_Quartz_Crystal_93c3951.jpg
8
 Topaz (Al2SiO4(OH-,F-)2)
 200
 external image 100px-Topaz_cut.jpg
9
 Corundum (Al2O3)
 400
 external image 100px-Cut_Ruby.jpg
10
 Diamond (C)
 1500
 external image 100px-Rough_diamond.jpg