Calcite vs Corundum
| Property | Calcite | Corundum |
|---|---|---|
| Fórmula | CaCO3 | Al2O3 |
| Sistema Cristalino | Trigonal | Trigonal |
| Clase Mineral | 05 Carbonates and Nitrates | 04 Oxides and Hydroxides |
| Dureza Mohs | 3.0 | 9.0 |
| Color | Colorless, white, yellow, orange, blue, green | Red (ruby), blue (sapphire), various colors |
| Brillo | Vitreous | Adamantine |
| Raya | White | Colorless |
| Transparencia | Transparent | Transparent |
| Exfoliación | Perfect rhombohedral {1011} | None |
| Fractura | Conchoidal | Conchoidal to uneven |