2-3"
Random pull 
Your piece will be (if not the exact picture) quite similar!
 
Covellite stimulates the third eye chakra and enhances psychic abilities. Covellite is a stone of vision and acts as a reflective mirror showing the dark side of one’s soul and the potential problems or flaws in one’s thoughts and behaviors. This stone helps to release one from the past and anything that may be holding you back, such as old trauma, loss, shame and fear.
 
Please see our Crystal Lore Section for more info on this amazing stone!