Physical properties Habit Density Hardness Fracture
Chemical composition Other properties Piezoelectricity Pyroelectricity Magnetism Radioctivity
Cubic
Sky blue. Color variation : blue at the center and white on the edges Violet under UV light (shortwave and longwave) White Vitreous Translucent Isotropic ; n = 1,434
Cubes and Cumberland twins 3,13 4 Perfect cleveage along {111}
