Kyanite vs Sodalite
| Property | Kyanite | Sodalite |
|---|---|---|
| Formula | Al2SiO5 | Na4Al3Si3O12Cl |
| Crystal System | Triclinic | Cubic (Isometric) |
| Mineral Class | 09 Silicates | 09 Silicates |
| Mohs Hardness | 4.5-7.0 | 5.5-6.0 |
| Color | Blue, white, gray, green | Rich royal blue, violet-blue, gray, white |
| Luster | Vitreous | Vitreous |
| Streak | Colorless | White |
| Transparency | Translucent | Translucent |
| Cleavage | Perfect {100} | Poor {110} |
| Fracture | Splintery | Conchoidal to uneven |