Pyrite is often known as fools gold. But its not a foolish stone to have in your collection. 
Pyrite is a powerful protection stone which shields and protects against all forms of negative vibrations and/or energy. 
 
Crystal Healing
We suggest holding this stone after cleansing your aura or after any cord cutting work. Having Pyrite around you or on your persons when in places with a lot of people or when visiting someone you know can be negative can help to protect your own energetic field.