Also known as Merlinite. 
 
Helps to focus on knowledge & insight. Assist people to find their innermost self. Concentrates on traits of strength & courage. Even associated to love.
 
Chakras: Root & Crown
How to cleanse: Sun & Moon
 
Disclaimer: I am not a medical professional. All information provided is what the Crystal Healing community commonly use gemstones for. Please, still consult a doctor for any medical necessities.