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Properties of Diamond
| Chemical Composition | Carbon |
| Crystal Structure | Cubic Fd3m - O7h |
| Atomic Weight | 12.01 |
| Atomic Radius | 0.077 nm |
| Number of Atoms in Unit Cell | 8 |
| Number of Atoms per cubic meter | 1.77 x 1029 |
| Density | (3.1524 + 0.00005) x 10-3 kgm-3 |
| Graphitization | ~900 K |
| Chemical Activity | Very inert. Attacked only by oxidizing agents and carbide formers. |
| Hardness | 10 Moh |
| Indentation Hardness | Depending on Crystallograpic Direction, 5700 - 10400 kg/m2 |
| Coefficient of Friction in Air | 0.1 But depends on load direction and geometry |
| Youngs Modulus | 10.54 x 1011 Nm-2 |
| Specific Heat | 6.195 Jg-1 |
| Refractive Index | 2.4 |
| Dielectric Constant | 5.70 + 0.05 at 300 K |
| Resistivity | >1018 Ohm m |
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Gem Diamond Products
323 Adhyaru Industrial Estate, Sun Mill Compound, Lower Parel, Bombay 400 013, India.
Tel: + 91 - 22 - 2492 7823 Fax: + 91 - 22 - 2495 2706