Granite Rock Hardness Scale

Because granite is a rock composed of a variety of minerals.

Granite rock hardness scale.

It can scratch talc but not calcite which is even harder. It can be scratched by all other materials. Granite is not assigned a number on the mohs scale of hardness. The hardness of stone is just one way of identify them things like color luster crystalline form and cleavage are also used.

You can confirm the granite hardness with quality reports from granite supplier and exporter of your choice. Interestingly the hardness of all black green red yellow brown pink and white granite are more or less the same. Mohs scale of mineral hardness is named after friedrich mohs a mineralogist mohs scale is ordered by hardness determined by which minerals can scratch other minerals. The mohs scale of mineral hardness m oʊ z is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material.

The mohs scale is a measurement of the relative hardness of minerals. The mohs scale is truly a comparative scale. In terms of absolute hardness quartz is a 100 and topaz is 200 twice as hard. Granite comes in at a 6 to 7 on the mohs scale meaning it is relatively hard.

Created in 1812 by german geologist and mineralogist friedrich mohs it is one of several definitions of hardness in materials science some of which are more quantitative. Rocks are made up of one or more minerals. For instance if a stone has a mohs hardness of seven then that stone is solid enough to scratch another stone with a rating of six or lower. An example of the hardness of a granite countertop can be seen in the fact that a knife blade will not scratch the surface.

Before making an actual purchase it is expected that you ask your granite supplier about a granite quality testing report putting detailed data on granite.