flat faces at the top of the crystal are called windows and may form in a diamond shape, some large, some small, which facilitates clarity of mind and the organization of information received from different levels of being.  This crystal can assist the balance between the spiritual and material worlds, facilitating living in everday reality while at the same time being connected to a greater reality.  Diamond windows provide a doorway into other levels of being and a deep connection with the self.  They reflect the inner state of being and causes of dis-ease and can help find missing person's whereabouts or surroundings if a strong enough image of the person is projcted into the center of the diamond.