Artificial diamonds may very well be grown from high-purity carbon beneath excessive pressures and temperatures or from hydrocarbon fuel by chemical vapor deposition (CVD). Imitation diamonds might be made out of supplies akin to cubic zirconia and silicon carbide Pure, synthetic and imitation diamonds are mostly distinguished utilizing optical methods or thermal conductivity measurements. Perhaps probably probably the most clearly visible one of many 4 Cs is the carat weight of diamonds, because of it pertains to the stone’s measurement. Not surprisingly, larger diamonds are usually dearer than smaller diamonds. That is true not only because you’re getting more diamond on your money but also because of larger diamonds are less common.
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New York: Abrams, 1990. Where can diamonds be found?
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New York: Harry N. Abrams, Publishers, 1993.
In some cases, the carbon appears to have originated within the mantle of the Earth, so carbon that was already within the Earth. In different situations, there’s proof very curiously to suggest that the carbon could have originated near the surface of the Earth. The considering there’s that this carbon may need actually been carbon that was part of carbonate sediments or animals, plants, shells, whatever, that was carried down into the higher mantle of the Earth by the plate tectonics mechanism called subduction.
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