Why Granite is So Hard

Granite is a light-colored igneous rock formed through slow crystallization of magma beneath the Earth's surface. It is composed mostly of quartz and feldspar with smaller amounts of mica and amphiboles. It forms deep within the Earth and has taken millions of years to cool. Once it has cooled, the rock works its way upwards, through earthquakes and tectonic shifts.

In geology, granite is one of the hardest rocks on Earth. This is because it's made up of larger minerals. In addition to being a harder rock than other materials, granite is resistant to acid, water erosion, and weathering. Its strength makes it durable enough to withstand centuries of use, making it a valuable decorative stone.

The most common type of granite is formed by an intrusive magma flow. This magma flow has deposited large chunks of rock below the surface, combining them into a composite rock.