Grinding materials: from rock to diamond

Overview of diamond, CBN, artificial stones and natural stones

There are also different types. According to the Mohs scale for the hardness of materials applies approximately:

DesignationMohs hardness
Diamond10
CBN9-10
Silicon carbide (corundum)9.6
Aluminum oxide9-9.5
Silicon dioxide7

A stone with a higher Mohs hardness than another can scratch the other, but not vice versa. The important Materials: