Diamond vs Graphite
| Property | Diamond | Graphite |
|---|---|---|
| Formule | C | C |
| Système Cristallin | Cubic (Isometric) | N/A |
| Classe Minérale | 01 Native Elements | N/A |
| Dureté Mohs | 10.0 | N/A |
| Couleur | Colorless, yellow, brown, blue, green, pink | N/A |
| Éclat | Adamantine | N/A |
| Trait | None | N/A |
| Transparence | Transparent | N/A |
| Clivage | Perfect octahedral {111} | N/A |
| Cassure | Conchoidal | N/A |
Key Differences
- ◆ Diamond (hardness 10) is the hardest natural mineral; graphite (hardness 1–2) is one of the softest — yet both are pure carbon.
- ◆ Diamond has a tetrahedral sp3 crystal structure; graphite has layered sp2 sheets held by weak van der Waals forces.
- ◆ Diamond is transparent with adamantine luster; graphite is opaque with metallic to dull luster.
- ◆ Diamond is an electrical insulator; graphite is a good electrical conductor.
- ◆ Diamond forms under extreme pressure in the mantle; graphite forms at low pressure in metamorphic rocks.