The use of Dumortierite works very well with the intellect, since it increases your intellectual abilities. It will also be very useful with your mental abilities, including mathematical and language-based skills. If you have a very strong temperament, this stone will also increase your patience, helping to calm you down during intense moments and giving you a clear mind to know exactly what what you must do at the precise moment. It will help you with your organizational skills and allow you to clear all the mess that fills your life, including emotional and mental disorder by increasing your self-esteem. This stone will undo your irrational fears and strengthen your courage. It will also help to release your selfishness, stubbornness and other unhealthy personal addictions.