Clear quartz is considered to be the Grandfather of the stones. Amplifies energy and thought. It is considered "THE STONE OF LIGHT".  Draws off negative energy of all kinds , absorbs, stores, regulates and amplify energy. Aids on concentration, unlock memory and helps maintaining  the auric field clean and the mind focused.  A very good crystal to add to your home or office for maintaining the energy clean and light and also a powerful crystal to wear or have with you to keep you focus, positive and centered during your day to day life.