Stones form one of the most important building materials in civil engineering. Stones are derived from rocks, which form the earth’s crust and have no definite shape or chemical combination but are mixtures of two or more minerals. The mineral is a substance which is formed by the natural inorganic process and possesses a definite chemical combination and molecular structure. They are strong, durable and descent in appearance.
Note: Stones are also used as decorative material on either exterior or interior.
Description sourced from Safari Books Online. Image sourced from AboutCivil.