Granite is an igneous rock. This means that at one time during its development, it was melted like volcanic lava. Unlike lava, however, this melted rock never reached the surface. It remained trapped inside, where it slowly cooled and crystallized, resulting in a very uniform, speckled stone that ranges in color from blacks and grays to pinks, browns, and reds. Polished granite is a very durable stone, much harder than marble. Granite has been popularly used for commercial purposes for many years. Granite can often be found on building exteriors, interior walls, and “high-traffic” floors. Granite will withstand almost any element including heat and cold.