Properties
| Category | Native minerals |
|---|---|
| Formula | C |
| Crystal system | Cubic |
| Color | Typically yellow, brown, or gray to colorless. Less often blue, green, black, translucent white, pink, violet, orange, purple, and red. |
| Crystal habit | Octahedral |
| Cleavage | 111 (perfect in four directions) |
| Fracture | Irregular/Uneven |
| Mohs scale hardness | 10 (defining mineral) |
| Luster | Adamantine |
| Streak | Colorless |
| Diaphaneity | Transparent to subtransparent to translucent |
| Specific gravity | 3.52±0.01 |
| Density | 3.5–3.53 g/cm3 3500–3530 kg/m3 |
From the Wikipedia article
Diamond is a mineral form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond is a tasteless, odorless, strong, brittle solid, a poor conductor of electricity, colorless in pure form, and insoluble in water. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools.
Source
Source record: crystal-compendium/diamond/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Diamond — revision id 1375974103. Text and properties from Wikipedia, licensed CC BY-SA 4.0.