Formation
The reason for the formation of carbon flaws is largely unknown. It is theorized that, though the material was exposed to the same conditions of heat and pressure as the rest of the crystal, there may be some other factor not evenly distributed throughout the carbon that formed the diamond. Many chemical actions happening simultaneously could possibly cause carbon in the solution to surround particles that escaped the solvent. Another theory is that diamonds are formed by the slow accretion of crystals. This means that the crystal structure forms and grows around a single nucleus of the element and that nucleus can be excluded from the crystallization process. This nucleus is then surrounded by crystallized diamond and becomes a carbon flaw. These nuclei are theorized to be other common forms of carbon such as graphite or carbonado, though they could be an amorphous carbon structure.
Read more about this topic: Carbon Flaw
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