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en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness

The Mohs scale of mineral hardness is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to ...

simple.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness

Mohs scale of mineral hardness is named after the scientist, Friedrich Mohs, who invented a scale of hardness based on the ability of one mineral to scratch ...

geology.com/minerals/mohs-hardness-scale.shtml

The most commonly used test of mineral hardness is Mohs Hardness Scale.

www.minsocam.org/MSA/collectors_corner/article/mohs.htm

The Mohs' hardness scale was developed in 1822 by Frederich Mohs. This scale is a chart of relative hardness of the various minerals (1 - softest to 10 ...

www.amfed.org/t_mohs.htm

In 1812 the Mohs scale of mineral hardness was devised by the German mineralogist Frederich Mohs (1773-1839), who selected the ten minerals because they ...

www.geologypage.com/2016/04/mohs-hardness-scale.html

Apr 6, 2016 ... The Mohs scale of mineral hardness is a qualitative ordinal scale that characterizes the scratch resistance of various minerals through the ...

www.nps.gov/articles/mohs-hardness-scale.htm

Mar 7, 2017 ... The Mohs Hardness Scale is used as a convenient way to help identify minerals. A mineral's hardness is a measure of its relative resistance to ...

www.newworldencyclopedia.org/entry/Mohs_scale_of_mineral_hardness

The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material.

www.gemselect.com/gem-info/gem-hardness-info.php

Sep 16, 2006 ... Mohs scale of hardness is used to measure a gems resistance to scratching. Learn which gemstones are the hardest and best for rings and ...