Analysis & grading Coloured Diamond Reports & ServicesSubmit a Gemstone
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.
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.View Sample Report
Coloured Diamond Grading Report0.15+ carats, unmounted diamonds only View Sample Report
Coloured Diamond Identification and Origin ReportAny carat weight, loose or mounted View Sample Report
|Approximate Cost||$ 147 (£87) *||$ 98 (£58) *|
|GIA 4Cs Assessment|
|Colour Grade & Origin|
|Plotted Clarity Diagram|
|Polish & Symmetry|
|Tested for natural vs.
Synthetic and Treatments
|Full Colour Image||Optional||Optional|
Coloured Diamond Services
GIA Add-On Services give you further information or security for your coloured diamond.
GIA Follow-Up Services verify, re-evaluate or update results from your original GIA Report.
GIA Specialty Services offer further analysis and information on your noteworthy coloured diamonds.
GIA Batch Services utilise GIA-developed technology to analyse and sort coloured 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 Coloured Diamond Grading Report?
- How does the coloured diamond grading system differ from the D-to-Z diamond grading system?
- How does GIA grade coloured diamonds?
Report check plus
Easily download grading results and PDFs of multiple reports at once.Learn More
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Questions? Call +1 800 421 7250 ext 7590 orContact Us
+1 760 603 4500 ext 7590
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