Dumortierite is attributed by some as being helpful in gaining control over life, releasing negativity and coming to terms with reality. Therefore, Dumortierite is sometimes mentioned as being useful in treating addictions and compulsive/impulsive behaviors.
 

Dumortierite displays a vitreous to dull luster, its crystals are translucent to transparent with massive specimens appearing nearly opaque. Interestingly, Dumortierite is pleochroic from red to blue to violet, with some specimens fluorescing a blue color with a yellow matrix under long wave UV light or a white fluorescence under short wave UV light. Massive quartz colored blue by included Dumortierite crystals is commonly referred to as Dumortierite Quartz.
 

While only occasionally faceted due to a lack of clarity, Dumortierite displays a bright coloring and a good hardness. Massive specimens are carved into cabochons, beads, sculptures, eggs and spheres to bring out its vitreous luster and in China it has been used as a Lapis Lazuli imitation.
 

While Dumortierite can be misidentified as other ornamental stones (i.e. Blue Sodalite, Lazurite and Lazulite), Blue Sodalite is less dense and has whiter portions, while Lazurite and Lazulite are not fibrous.
 

Dumortierite has many associated minerals including Quartz, Kyanite, Sillimanite, Staurolite, Andalusite, Muscovite, Lazulite and Pyrophyllite.