The meaning of Clear Quartz is healing and spiritual growth.
Clear Quartz is known as the "master healer" and will amplify energy and thought, as well as the effect of other crystals.  It absorbs, stores, releases and regulates energy.  Clear Quartz draws off negative energy of all kinds. 
Cleanses and enhances the organs and subtle bodies and acts as a deep soul cleanser, connecting the physical dimension with the mind.  Clear Quartz enhances psychic abilities.  It aids concentration and unlocks memory.  Stimulates the immune system and brings the body into balance.  Clear Quartz harmonises all the chakras and aligns the subtle bodies. Also great for the Crown Chakra. 
**These vary completely in shape and size. They weigh between 1.5-3 pounds each.