this gem when attuned to the holder by one of the members spell casters, adds a teleportation option to the place it is linked to.  It linked to a giant black crystal with purple highlights which is seated in the middle of a stone circle.  It cannot transport PC’s to or from different realms, only works in our material word

Notes: The mother crystal cannot survive sun light so moving it must be done at night. Also the mother crystal can regrow any chunk which is removed so there is an unlimited amount of chunks can be made., attunement removes charges and adds daily cool down, Utility