Quartz is a chemical compound consisting of one part silicon and two parts oxygen. It is the most abundant mineral found at Earths surface and its unique properties make it one of the most useful natural substances.Quartz is the second most common mineral in the Earths continental crust. It is made up of a lattice of silica. Its usefulness can be linked to its physical and chemical properties. It is chemically inert in contact with most substances. It has electrical properties and heat resistance that make it valuable in electronic products. Its luster, color and diaphaneity make it useful as a gemstone and also in the making of glass. This makes it a very essential mineral in our daily life.