This double quartz necklace is plated with silver. It is 1 1/4 inches by 3/4 inches. 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, neutralizing background radiation, including electromagnetic smog or petrochemical emanations. It balances and revitalizes the physical, mental, emotional, and spiritual planes. 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 harmonies to all the chakras and aligns the subtle bodies. It does not come with a chain unless asked for.