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Carbon flaw A carbon flaw is a blemish present within a diamond crystalline form of carbon, usually seen as a black spot. The blemish may be microscopic or visible to the naked eye. These spots are undesirable imperfections since they can be seen easier than other flaws. It is worth noting that, while diamonds are composed of purely carbon, the black spot flaws could be other inclusions (foreign matter) such as olivine, garnet, pyrite, silica, calcite, and iron oxides.〔http://www.abazias.com/DiamondEducation/articles/What-is-an-Inclusion.asp, accessed: 12 December 2012〕 ==Appearance== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Carbon flaw」の詳細全文を読む
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