Analysis & grading

Coloured Diamond Reports & Services

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Available reports

Coloured Diamond Grading Report

Full quality assessment, colour grade and clarity plot. Identifies natural vs. treated colour. For loose coloured diamonds 0.15 carats or more.

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Coloured Diamond Identification and Origin Report

Describes the coloured diamond’s colour grade and identifies natural vs. treated colour. For loose or mounted coloured diamonds of any size.

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Coloured Diamond Services

Add-On Services
GIA Add-On Services give you further information or security for your coloured diamond.

Follow-Up Services
GIA Follow-Up Services verify, re-evaluate or update results from your original GIA Report.

Specialty Services
GIA Specialty Services offer further analysis and information on your noteworthy coloured diamonds.

Batch Services
GIA Batch Services utilise GIA-developed technology to analyse and sort coloured diamonds based on varying test types.

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Frequently asked questions

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Resources

Report check plus

Easily download grading results and PDFs of multiple reports at once.

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Lab Return Dates

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Analysis & grading fees

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Facetware cut estimator

Use GIA’s free online tool to estimate a cut grade.
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Questions? Call +1 800 421 7250 ext 7590 or
+1 760 603 4500 ext 7590

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