Available Reports
Colored Diamond Grading Report
Full quality assessment, color grade and clarity plot. Identifies natural vs. treated color. For loose, natural, colored diamonds 0.15 carats or more.
Colored Diamond Origin Report
Full 4Cs assessment with a plotted clarity diagram, geographic origin and GIA report number laser inscription. For loose, natural, colored diamonds only, weighing 0.15 carats or more that were submitted for rough analysis.
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Colored Diamond Identification and Origin Report
Describes the color origin (natural vs. treated) for loose or mounted, natural, colored diamonds of any size. Color grade included for loose colored diamonds.
View Sample ReportNatural Colored Diamond Services
Add-On Services
GIA Add-On Services give you further information or security for your natural colored 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 natural colored diamonds.
Batch Services
GIA Batch Services utilize GIA-developed technology to analyze and sort natural colored diamonds based on varying test types.
Frequently Asked Questions
- Which analysis and grading services are offered at each laboratory location?
- How do I pay for analysis and grading services?
- Why does a diamond have to be loose for the Diamond Grading Report and Colored Diamond Grading Report?
- How does the colored diamond grading system differ from the D-to-Z diamond grading system?
- How does GIA grade colored diamonds?
Resources
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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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Contact Lab Services
Questions? Call +1 800 421 7250 ext 7590 or
Contact Us
+1 760 603 4500 ext 7590 -
GIA Locations
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