Smokey Quartz is the ultimate grounding stone and helps protect against negative energy. 
 
This stone helps to create a barrier of protection between people that are holding it and negative energy that might be surrounding them. It also helps to ward of negative energy, physical attacks and psychic attacks.
 
It is believed that by wearing this you are going to feel better, you are going to feel joy, happiness and you are going to have less stress and anxiety. This stone is often used in meditation and practitioners use it for personal healing as well. Aegirine is often used by crystal healers to help heal metabolic system issues, muscle pain, and even to help with nerve damage repair.