Diamond Grading - The Gemological Institute of America


GIA pioneered diamond grading in the 1940s, creating a consistent way to describe a diamond in common language.

Today, GIA grading certificates are considered the hallmark of integrity in the diamond world.

The private laboratory issues two types of reports:

  • The GIA Diamond Grading Report provides scientifically determined information on shape, clarity, color, cut, carat weight, proportions, finish and treatments. It also includes a diagram of the diamond showing any inclusions that affect clarity.
  • The GIA Diamond DossierĀ® is a more concise version of the full report and is available for loose diamonds between .15 and 1.99 carats.

Learn more about some of the most well-known diamond grading laboratories HERE »

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