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Product

Diamond

Chemical formulaC (carbon)
Crystal systemCubic
Hardness10 (Mohs scale)
Density3.52 g/cm³
Refractive index2.42
Dispersion0.044
TransparencyTransparent
LusterAdamantine (highly reflective)
CleavagePerfect in four directions
ColorColorless, but can occur in various fancy colors (pink, blue, yellow, etc.)
StreakColorless
TransparencyTransparent
FractureConchoidal (shell-like)
Specific gravity3.52
Thermal conductivityVery high
Electrical conductivityInsulator
Melting pointApproximately 3,550°C (6,422°F)
Boiling pointDoes not boil, sublimes at very high temperatures