Pyrite is a powerful protection stone which shields and protects against all forms of negative vibrations and/or energy, working on the physical, etheric, and emotional levels.  It stimulates the intellect and enhances memory, helping to recall relevant information when needed.  Pyrite assists one in seeing behind facades, promoting an understanding of that which lies beneath words and actions.  The ancient Incas used Pyrite for meditation and divination.
Chakra- Solar Plexus 
Zodiac- Leo