Analysis & grading Coloured Diamond Reports & Services

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Available reports

11111Coloured Diamond Grading Report

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.

View Sample Report
11111Coloured Diamond Identification and Origin Report

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
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Comparison Chart

Coloured Diamond Grading Report
0.15+ carats, unmounted diamonds only View Sample Report
Coloured Diamond Identification and Origin Report
Any carat weight, loose or mounted View Sample Report
Approximate Cost $ 147 (£87) * $ 98 (£58) *
GIA 4Cs Assessment
Colour Grade & Origin
Clarity Grade
Carat Weight
Plotted Clarity Diagram
Polish & Symmetry
Tested for natural vs.
Synthetic and Treatments
Laser Inscription Optional Optional
Full Colour Image Optional Optional
*NOTE: prices shown are for 0.85 carat diamond
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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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