Mohs Scale was developed in 1812 by German mineralogist Friedrich Mohs
(1773-1839)
Mohs Scale of hardness is a RELATIVE scale, not proportional. I mean by this that a mineral with the hardness of 8 will NOT be twice as hard as a 4. (For example, diamond is 4X harder than sapphire!).It is really a scale of relative "scratchability".#1 is softest..................#10 is hardest
#1 | Talc |
#2 | Gypsum |
#3 | Calcite |
#4 | Fluorite |
#5 | Apatite |
#6 | Feldspar |
#7 | Quartz |
#8 | Topaz |
#9 | Corundum |
#10 | Diamond |
Gemstones and Mohs Scale
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