Dumortierite -
This crystal is very stimulating to your brain and brings enhanced intellectual abilities as it assists with all mental skills. It is a powerful stone to amplify many psychic gifts as well as it is highly stimulating to the pineal gland located behind the third eye. Dumortierite is a stone that teaches you to stand up for yourself; it will help you to take control of your own life and increase your level of patience. Dumortierite is a highly useful aid for anyone who is studying, as it assists the retention of information, as well as enhancing your will power, and capacity for self-mastery.