Shungite is actually a mineral, not a crystal. It is over 2 billion years old, and is almost purely carbon. It comes from Karelia Region of Russia. Shungite is the only mineral stone to contain fullerenes. Fullerenes are currently being studied for their healing and water purification properties.
Shungite assists in restoring emotional balance, spiritual evolution, and is a powerfully protective stone. It also is said to shield EMF (electromagnetic frequencies coming from WIFI, computers, cell phones, TVs, etc.).