Granite is one of the hardest and most common rocks on our planet. Few decorative stones (such as quartzite) can compete with it for its hardness and durability. This igneous rock has between 20% and 60% quartz by volume, and at least 35% of the total feldspar consisting of alkali feldspar, although commonly the term "granite" is used to refer to a wider range of coarse-grained igneous rocks containing quartz and feldspar. Granite hardness depends on the ratio of feldspar to quartz.

Granites can be predominantly white, pink, or gray in color, depending on their minerology. Because of granite's resistance to external conditions - moisture, frost, abrasion and sudden changes of temperature - it is often used for construction. Granite is very dense and has a high tolerance to chemicals. Sealing granite is recommended for stain resistance and maintenance purposes.