Because granite is between a 6 and 7 on the mohs scale it would be able to scratch other types of stone that have lower ratings such as marble.
Marble stone hardness.
Marble is commonly used for sculpture and as a building material.
The mohs scale of mineral hardness was developed to identify the strength and hardness of any natural mineral.
Each natural stone has a strength rating often referred to as its mohs hardness.
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.
The granite hardness helps buyers make a balanced decision.
After being sanded with progressively finer abrasives marble can be polished to a high luster.
Reviewing this guide can help you keep in mind what the mohs scale of hardness is and how it can be applied to evaluate different countertop options.
Ability to accept a polish.
It is also used as a low hardness abrasive for scrubbing bathroom and kitchen fixtures.
This allows attractive pieces of marble to be cut polished and used as floor tiles architectural panels facing stone window sills.