Dumortierite. Dumortierite is named after a French paleontologist, Eugène Dumortier, who discovered it in 1881 in the Rhône-Alps region of France. It is primarily a stone of the third eye chakra but it will also have a beneficial effect within the crown chakra and the throat chakra. Dumortierite is used to manufacture high grade porcelain. This crystal is very stimulating to the brain and brings enhanced intellectual abilities as it assists with all mental skills, both mathematical and language based. Dumortierite is a stone that teaches you to stand up for yourself, and it will help you to take control of your own life and increase your level of patience. Dumortierite has a deep violet to blue colour that is very attractive and unusual. This stone can also occur as pink and brown. You need dumortierite in your life because it works very well with your intellect. It will increase your intellectual abilities. It will also be very helpful with your mental skills, including language-based and mathematical skills.If you have a very short temper, this stone will increase your patience as well.