Azurite vs Kyanite
| Property | Azurite | Kyanite |
|---|---|---|
| Formula | Cu3(CO3)2(OH)2 | Al2SiO5 |
| Crystal System | Monoclinic | Triclinic |
| Mineral Class | 05 Carbonates and Nitrates | 09 Silicates |
| Mohs Hardness | 3.5-4.0 | 4.5-7.0 |
| Color | Azure blue, dark blue | Blue, white, gray, green |
| Luster | Vitreous | Vitreous |
| Streak | Light blue | Colorless |
| Transparency | Transparent | Translucent |
| Cleavage | Perfect {011}, fair {100} | Perfect {100} |
| Fracture | Conchoidal | Splintery |