The crystal resonates primarily with the brain and central nervous system, particulary the brains ability to interpret information and messages that are received from the CNS. An excellent stone to use with anyone experiencing degenerative brain disease, memory loss, or other types of brain function problems. It is also an excellent meditation facilitator, due to its magnesium content. It assists one in releasing stress and being more flexible in their approach to life. An excellent stress reducing stone in general." This information was provided by Naisha Ashian, author of the Book of Stones. Her website is www.crystalisinstitute.com