Tumbled Clear Quartz:  Quartz crystal possesses certain chemical and electric properties and is widely used across many industries. You might be surprised to find it used in the making of watches, complex medical equipment, refractory applications and much more. Price is per crystal. Metaphysical uses; clear quartz is energizing and can also help sort the psyche; naturally imprintable, much like a recording device, it can be "programmed" for use in place of just about anything else, including non-crystal energies, in various forms of energy work; a natural amplifier, it is often used in crystal grid-work and body-work; it is so versatile that it is indispensable in any crystal-user's tool box.