Apatite vs Beryl (Emerald)
| Property | Apatite | Beryl (Emerald) |
|---|---|---|
| Formula | Ca5(PO4)3(F,Cl,OH) | Be3Al2(SiO3)6 |
| Crystal System | Hexagonal | Hexagonal |
| Mineral Class | 08 Phosphates, Arsenates, and Vanadates | 09 Silicates |
| Mohs Hardness | 5.0 | 7.5-8.0 |
| Color | Green, blue, yellow, violet, colorless | Green (emerald), blue (aquamarine), pink (morganite), yellow (heliodor) |
| Luster | Vitreous | Vitreous |
| Streak | White | Colorless |
| Transparency | Transparent | Transparent |
| Cleavage | Poor {0001} | Poor {0001} |
| Fracture | Conchoidal to uneven | Conchoidal to uneven |