Definition
What is Diamond?
Diamond is a crystalline form of carbon whose tightly bonded atomic structure produces exceptional hardness. Gem-quality diamond may be natural or laboratory-grown; simulants are different materials that imitate its appearance.
At a glance
Gemological properties
Values marked pending have not yet cleared the editorial source review.
| Gemstone name | Diamond | Mineral species | Diamond |
|---|---|---|---|
| Chemical formula | C | Crystal system | Cubic |
| Mohs hardness | 10 | Specific gravity | 3.51–3.53 |
| Refractive index | 2.42 | Birefringence | 0 |
| Primary color | White / Colorless | Optical character | Pending verification |
| Luster | Pending verification | Transparency | Pending verification |
Science & context
A layered reference
What is Diamond?
Diamond is a crystalline form of carbon whose tightly bonded atomic structure produces exceptional hardness. Gem-quality diamond may be natural or laboratory-grown; simulants are different materials that imitate its appearance.
Evidence
References & further reading
- [1]Diamond Gemstone Overview
Gemological Institute of America
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