Diamond Basic 101: The Diamond’s 5Cs

ภาษาไทย Diamonds are easier to classify and buy then colored gemstones. This is due to being white in color plus having standardized 4Cs criteria. Diamond’s 4Cs are color, clarity, cut and carat weight. For this post, I added one more “C” as a certificate. Certificate quality is also relevant in determining how much a diamond …

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