Quartz Sphere 4'' diameter (12 3/4'' circumference). Quartz will amplify all energies, especially thought forms. It will activate many levels of consciousness and can be used to enhance or develop mental and psychic powers. Crystals will also help you retain mental focus for meditation and concentration. The extraordinary properties of quartz crystals are physical as well as metaphysical. Every molecule of SiO2 inside your crystals looks just like the whole crystal – as within, so without. Therefore a crystal is a macrocosm of its internal arrangement of molecules. Before technological advances enabled us to create optically clear materials, quartz crystals were used for telescopes, watch covers and microscopes. Even with astounding scientific advances, quartz crystals are still widely utilized for many purposes.