Muscovite vs Tourmaline
| Property | Muscovite | Tourmaline |
|---|---|---|
| Formula | KAl2(AlSi3O10)(OH)2 | Complex borosilicate |
| Crystal System | Monoclinic | Trigonal |
| Mineral Class | 09 Silicates | 09 Silicates |
| Mohs Hardness | 2.0-2.5 | 7.0-7.5 |
| Color | Colorless, silver-white, pale green | Black, green, pink, blue, watermelon |
| Luster | Vitreous | Vitreous |
| Streak | Colorless | Colorless |
| Transparency | Transparent | Transparent |
| Cleavage | Perfect basal {001} | None |
| Fracture | Uneven | Conchoidal to uneven |