![](/images/smile/77.jpg)
![](/images/smile/340.jpg)
![](/images/smile/9.jpg)
![](/images/smile/308.jpg)
![](/images/smile/128.jpg)
![](/images/smile/215.jpg)
![](/images/smile/51.jpg)
![](/images/smile/259.jpg)
![](/images/smile/110.jpg)
![](/images/smile/327.jpg)
![](/images/smile/85.jpg)
![](/images/smile/302.jpg)
![](/images/smile/37.jpg)
![](/images/smile/191.jpg)
![](/images/smile/85.jpg)
![](/images/smile/258.jpg)
![](/images/smile/15.jpg)
![](/images/smile/281.jpg)
![](/images/smile/111.jpg)
![](/images/smile/207.jpg)
![](/images/smile/60.jpg)
![](/images/smile/286.jpg)
![](/images/smile/134.jpg)
![](/images/smile/321.jpg)
![](/images/smile/100.jpg)
![](/images/smile/331.jpg)
![](/images/smile/42.jpg)
![](/images/smile/330.jpg)
![](/images/smile/152.jpg)
![](/images/smile/281.jpg)
![](/images/smile/155.jpg)
![](/images/smile/229.jpg)
![](/images/smile/145.jpg)
![](/images/smile/260.jpg)
![](/images/smile/10.jpg)
![](/images/smile/276.jpg)
![](/images/smile/95.jpg)
![](/images/smile/307.jpg)
![](/images/smile/103.jpg)
![](/images/smile/290.jpg)
The Mohs scale of mineral hardness ( / moʊz /) is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. The scale was introduced in 1822 by the German geologist and mineralogist Friedrich Mohs, in his Treatise on Mineralogy; [1] [2] it ...
![](/images/whatsapp.png)
![](/images/smile/106.jpg)
![](/images/smile/198.jpg)
![](/images/smile/146.jpg)
![](/images/smile/177.jpg)
![](/images/smile/20.jpg)
![](/images/smile/322.jpg)
![](/images/smile/110.jpg)
![](/images/smile/283.jpg)
![](/images/smile/115.jpg)
![](/images/smile/278.jpg)
![](/images/smile/56.jpg)
![](/images/smile/340.jpg)