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  2. Kimberley Process Certification Scheme - Wikipedia

    en.wikipedia.org/wiki/Kimberley_Process...

    to not buy diamonds from suspect sources or unknown suppliers, or which originate in countries that have not implemented the Kimberley Process Certification Scheme; to not buy diamonds from any sources that, after a legally binding due process system, have been found to have violated government regulations restricting the trade in conflict ...

  3. Gemological Institute of America - Wikipedia

    en.wikipedia.org/wiki/Gemological_Institute_of...

    Diamond reports from GIA (as well as other, for-profit sources) are now demanded by most consumers purchasing diamonds over a certain size, typically for over 0.5 carat (100 mg), and almost always for over 1.0 carat (200 mg), and are considered an important tool in guaranteeing that a diamond is accurately represented to a potential buyer.

  4. International Gemological Institute - Wikipedia

    en.wikipedia.org/wiki/International_Gemological...

    IGI provides independent grading reports, colored stone reports, identification and appraisal reports, diamond authentication and attestations of origin, and laser inscription services. They also offers diamond and colored stone courses through IGI's Schools of Gemology. The IGI school was the first to offer the practical Rough Diamond course. [4]

  5. What Are the Key Differences Between Lab-Grown and Natural ...

    www.aol.com/key-differences-between-lab-grown...

    A diamond can be anyone’s best friend, and whether you’re looking to purchase the stone as an anniversary gift, a birthday present, or simply just because, there are so many shapes, sizes ...

  6. Diamond clarity - Wikipedia

    en.wikipedia.org/wiki/Diamond_clarity

    Diamond clarity is the quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond called inclusions, and surface defects, called blemishes. Clarity is one of the four Cs of diamond grading, the others being carat , color , and cut .

  7. Diamond (gemstone) - Wikipedia

    en.wikipedia.org/wiki/Diamond_(gemstone)

    Diamonds with higher color grades are rarer, in higher demand, and therefore more expensive, than lower color grades. Oddly enough, diamonds graded Z are also rare, and the bright yellow color is also highly valued. Diamonds graded D–F are considered "colorless", G–J are considered "near-colorless", K–M are "slightly colored".

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