What to Know About Gem Grading Reports

When shopping for a diamond or other gemstone, it is important to understand the different grading reports available. A grading report is a document that provides an objective assessment of the quality of a gemstone. This information can help you make an informed decision about your purchase.

There are two main types of gem grading reports:

Laboratory-issued grading reports: These reports are issued by independent laboratories that specialize in gemstone grading. The most well-known laboratories include the Gemological Institute of America (GIA), the American Gem Society (AGS), and the European Gemological Laboratory (EGL).

Appraiser-issued grading reports: These reports are issued by appraisers who are trained to evaluate gemstones. Appraiser-issued reports are typically less detailed than laboratory-issued reports, but they can still be helpful in making a purchase decision.

What Do Gem Grading Reports Include?

Gem grading reports typically include the following information:

The type of gemstone: This information is important because different gemstones have different properties.

The carat weight: This is the weight of the gemstone in carats. One carat is equal to 0.2 grams.

The color grade: This is a measure of the gemstone’s colorlessness. Colorless stones are the most valuable, while yellow or brown stones are less valuable.…

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