Aragonite vs Corundum
| Property | Aragonite | Corundum |
|---|---|---|
| Formel | CaCO3 | Al2O3 |
| Kristallsystem | Orthorhombic | Trigonal |
| Mineralklasse | 05 Carbonates and Nitrates | 04 Oxides and Hydroxides |
| Mohshärte | 3.5-4.0 | 9.0 |
| Farbe | Colorless, white, yellow, blue, green | Red (ruby), blue (sapphire), various colors |
| Glanz | Vitreous | Adamantine |
| Strichfarbe | White | Colorless |
| Transparenz | Transparent | Transparent |
| Spaltbarkeit | Poor {010} | None |
| Bruch | Subconchoidal | Conchoidal to uneven |