Diamond

A crystalline form of carbon, made of a network of covalent, tetrahedrally bound carbon atoms. In 1797, the English chemist Smithson Tennant proved that diamond is pure carbon.

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Atomic / Molecular Weight	12.011	gmol-1	Clip
Density	3520	kgm-3	Clip
Melting Point	3830	K	Clip
Refractive index	2.4175 to 2.4178	at 589.3nm 101.3kPa 0°C	Clip
Mohs Hardness	10		Clip

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See also: Carbon, Carbonado, Graphite.