Transparent Rock Crystal has many electronic uses; it is used as oscillators in radios, watches, and pressure gauges, and in the study of optics. Quartz is also used as an abrasive for sandblasting, grinding glass, and cutting soft stones. Quartz is an igneous rock that is composed of oxygen and silicon atoms in a continuous makeup of silicon-oxygen tetrahedra. As one of the most abundant minerals in the planet's continental crust, Quartz falls second right behind feldspar. Place an order now for Blue Quartz Beads line online.