Reap the benefits of wearing smokey quartz, black tourmaline and red tigers eye when you wear this gorgeous stacker which measures approximately 5 3/4 inches. Smoky quartz is an excellent grounding crystal. It neutralizes negative energies and detoxifies. Its exposure to natural underground radiation makes it one of the most powerful crystals for purifying the environment from electromagnetic stress. Black tourmaline is pyroelectric, which means it produces electricity when it is heated. It’s also piezoelectric, which means that it’s also capable of storing electrical charge. It is a very powerful stone which can bring lots of benefits to your health and well being. It absorbs negative energy and encourages clear thinking and lightheartedness. It is also used for blocking electromagnetic radiation.