3"
Random pull 
Your piece will be (if not the exact picture) quite similar!
 
Scolecite is a stone of peacefulness and connection. It is an interdimensional crystal. Scolecite offers protection from the intrusion of negative astral energies or entities. This stone facilitates the opening of informational networks and patterns in order to communicate with other worlds, especially with the spiritual world.
 
Please see our Crystal Lore Section for more info on this amazing stone!