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Diamond flaws
Diamonds flaws are common. Few diamonds are perfect; most of them have some inclusion or imperfection. These inclusions are also known as flaws and exist in various forms, exterior and interior. Inclusions are also classified in the manner in which they were formed. For example, syngenetic diamond inclusions are those inclusions which were formed while a diamond was being made, while epigenetic inclusions were formed after a diamond was made.
==Flaws==
The presence or absence of flaws or inclusions in a diamond is usually decided by examining the stone carefully with a lens having the standard magnifications of 10x. No other magnification should be taken as authoritative. Stones which show no apparent flaws or inclusions under this magnification are regarded as flawless. The term for a scarcely perceptible inclusion is “VVS” for "very very slight (or small)" – which is sometimes offered as flawless. Slightly larger flaws or groups of very thin inclusions are termed “VS” ("very slight"). Larger flaws or inclusions are termed as "SI" (or slightly included). Even larger flaws are termed as “1st pique”. Slightly larger flaws classify the stone as “2nd pique” and so on.
Any flaws which are visible with the naked eye would be sufficient to scale the price down considerably.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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