Malachite is a combination of green and black. Green brings physical as well as emotional healing and black releases negativity that blocks healing. Black is also the color of the root chakra--it gets to the root of the situation and brings it up to the surface to be transformed. The high copper content in Malachite helps with arthritis and swollen joints. Placing it on top of a sprained ankle reduces swelling. Malachite protects against electrical magnetic pollutants.