Diamond vs Graphite
| Property | Diamond | Graphite |
|---|---|---|
| 化学式 | C | C |
| 晶系 | Cubic (Isometric) | N/A |
| 鉱物分類 | 01 Native Elements | N/A |
| モース硬度 | 10.0 | N/A |
| 色 | Colorless, yellow, brown, blue, green, pink | N/A |
| 光沢 | Adamantine | N/A |
| 条痕色 | None | N/A |
| 透明度 | Transparent | N/A |
| 劈開 | Perfect octahedral {111} | N/A |
| 断口 | 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.