It consists of oxygen and silicon (silicon dioxide). This crystal can be formed in numerous ways and occurs in most metamorphic and igneous rocks, especially in gneiss and granite.
Since it resists weathering, you can find quartz in gravels and alluvial sands. Quartz is known as the "master healer" and will amplify energy and thought, as well as the effect of other crystals. It absorbs, stores, releases and regulates energy. Clear Quartz draws off negative energy of all kinds, neutralising background radiation, including electromagnetic smog or petrochemical emanations.