Apatite vs Corundum
| Property | Apatite | Corundum |
|---|---|---|
| Fórmula | Ca5(PO4)3(F,Cl,OH) | Al2O3 |
| Sistema Cristalino | Hexagonal | Trigonal |
| Classe Mineral | 08 Phosphates, Arsenates, and Vanadates | 04 Oxides and Hydroxides |
| Dureza Mohs | 5.0 | 9.0 |
| Cor | Green, blue, yellow, violet, colorless | Red (ruby), blue (sapphire), various colors |
| Brilho | Vitreous | Adamantine |
| Traço | White | Colorless |
| Transparência | Transparent | Transparent |
| Clivagem | Poor {0001} | None |
| Fratura | Conchoidal to uneven | Conchoidal to uneven |