Granite Rock Hardness Scale

Rocks are made up of one or more minerals.

Granite rock hardness scale.

Granite comes in at a 6 to 7 on the mohs scale meaning it is relatively hard. The mohs scale of mineral hardness was developed to identify the strength and hardness of any natural mineral. 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. 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.

In terms of absolute hardness quartz is a 100 and topaz is 200 twice as hard. You can confirm the granite hardness with quality reports from granite supplier and exporter of your choice. It can scratch talc but not calcite which is even harder. The hardness of stone is just one way of identify them things like color luster crystalline form and cleavage are also used.

An example of the hardness of a granite countertop can be seen in the fact that a knife blade will not scratch the surface. According to the scale talc is the softest. The mohs scale is a measurement of the relative hardness of minerals. Because granite is a rock composed of a variety of minerals.

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. It can be scratched by all other materials. 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. The igneous rock is comprised of mostly quartz and feldspar along with smaller amounts of various other minerals.

Interestingly the hardness of all black green red yellow brown pink and white granite are more or less the same.