Shattukite

Formed through the alteration of primary copper minerals in oxidized zones of copper deposits. 
Considered a "Psychic Communication Stone," it is believed to enhance psychic abilities, improve spiritual understanding, and facilitate strong connections with spirit guides. 
Associated with clarity of mind, heart, and throat, it helps in speaking one's highest truth and processing spiritual information. 
Thought to offer protection from physical and psychic harm, and to promote courage and inner strength.