2-3"
Random pull 
Your piece will be (if not the exact picture) quite similar!
 
The high vibration and rapid transfers of energy from Kyanite create pathways where none existed before. Like a universal bridge, it is an extraordinary crystal of connection, opening the mind centers, enhancing telepathic and psychic abilities, bridging gaps in all communication efforts, and providing a link for transmitting or receiving healing energy. It immediately aligns the chakras and subtle bodies, bringing tranquility and a calming effect to the whole being. It is an exceptional stone for transitioning into deep meditative states.
 
Please see our Crystal Lore Section for more info on this amazing stone!