For all its variety, when most people speak of "crystals", they are usually referring to Rock Crystal (Clear Quartz), the six-sided prisms of pure light and energy known as the Perfect Jewel. In its sparkling light is contained the entire color spectrum.
In the metaphysical world, Clear Quartz crystals are the supreme gift of Mother Earth. Even the smallest is imbued with the properties of a master healer teacher. Ancients believed these stones to be alive, taking a breath once every hundred years or so, and many cultures thought them to be incarnations of the Divine.
 
Necklace - Copper - 21 inches / 1/4 inch diameter