Selenite

SELENITE
~ Telepathy, interdimensional travel ~
Selenite is a crystallised form of gypsum, frequently found in under-water caves in Mexico, and sometimes Greece. The crystals are relatively soft, and often contain trapped water and gas bubbles. 

Mystic Lore: Intuitive sources say that Selenite is a stone for enhancing telepathy and other psychic abilities. It is believed to be a powerful stimulator of the "third eye" and crown chakras. It is also said to strengthen talents such as mediumship and channelling, and to assist in communication with spirit guides, angels and nature spirits.