Stone material hardness refers to the ability of resisting other objects to invade. It relates with the mineral component, the structure, the structure of stone.
Stone material hardness usually divides into the relative hardness and the absolute hardness.
Relative hardness: To select 10 kind of minerals as the standard, divides into 10 levels according to its relative size of hardness. The relative degree of hardness is formulates by mineralogist Mole, therefore also it is called the mohs' scale.
Absolute hardness: The absolute hardness is carried on determination by using the sclerometer. According to determination when exerts the load the way to be possible to divide into the static degree of hardness and the dynamic degree of hardness.