Quartz is the mineral more abundant in the earth's crust, is the main component a variety of rocks. Its name comes from the Greek "kristalos" that meaning ice, believing it was water ice at such a low temperature liquefaction was impossible.
Furthermore

quartz is the best limpador and neutralizing negative energies, the best choice for meditation and as for curing diseases, it helps to think positively.

has a large magnetic field which is reinforced our field energy is also a great balancer of all our faculties absorbing all the negative energies and harmful radiation emitted electrical appliances (TV, computer ...) .