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mohs_scale_metal_hardness_list

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mohs_scale_metal_hardness_list [2019/08/11 11:13]
admin created
mohs_scale_metal_hardness_list [2019/08/11 11:18] (current)
admin
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   * Tungsten: 7.5   * Tungsten: 7.5
   * Tungsten carbide: 8.5-9   * Tungsten carbide: 8.5-9
 +
 +  * Diamond - 10
 +  * Ruby and Sapphire - 9
 +  * Topaz and spinel - 8
 +  * Emerald and aquamarine - 7.5 to 8
 +  * Amethyst, smoky quartz, tourmaline and citrine - 7
 +  * Tanzanite, tsavorite and peridot - 6.5 to 7
 +  * Moonstone and jade - 6 to 6.5
 +  * Opal - 5.5 to 6.5
 +  * Turquoise - 5 to 6
 +  * Pearl - 2.5 to 4.5
 +  * Amber 2 to 2.5
mohs_scale_metal_hardness_list.txt ยท Last modified: 2019/08/11 11:18 by admin