With the exception of most blue diamonds that are semiconductors, diamonds are good electrical insulators, which means reducing the flow of electricity. Blue diamond acts as a doping agent and has semiconductivity to boron impurities causing p-type semiconductor behavior. Diamonds appear cold and hard, but they are good conductors of heat due to the strong chemical bonding in the crystals.
The crystal matrix with the most natural blue diamond-containing boron atoms substituted with carbon atoms is characterized by high thermal conductivity. Heat tends to flow into areas of little heat with the properties contained in most materials. Materials that are insulation have reduced the heat flow.
Diamond is actually a good thermal conductor, better than some familiar thermal conductors like copper and silver. Diamond warms up. When it talks about the "fire" of a diamond, it seems as if it can be mentioned literally as well as figuratively!
As long as we associate diamonds for their beauty and use them as a gem, about 20% of all diamonds mined are gem quality. The rest is suitable for industrial use only. It is used to cut other materials such as stone, metal and concrete as it is the hardest substance. It is also used to crush glasses and computer chips.
Most industrial diamonds are mined, but scientists who are artificially synthesized industrial diamonds are diamonds that are more generally mined. Currently, major companies like GE and De Beer manufacture synthetic diamonds. The primary use for these synthetic industrial diamonds is to conduct heat from equipment that requires a constant temperature for safe, proper processing.
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