Color is dark azure-blue. Luster is vitreous to dull. Specimens are translucent. Also granular and massive. Cleavage is distinct in one direction.
Fracture is uneven.
Hardness is 6. Streak is pale blue. Associated Minerals are quartz , rutile , kyanite , andalusite , garnets , muscovite , corundum , wardite , brazilianite and siderite . Menas Gerias, Brazil and most localities that contain lazulite will have some crystals of scorzalite.