Also known as fools gold, pyrite is incredible for prosperity , and very powerful as a protection stone for yourself and space.
 
Pyrite healing properties:
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. Stimulating the second and third chakras, pyrite enhances strength of mind and willpower. Pyrite is also considered to be lucky, attracting wealth and abundance.