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.

View Sample Report

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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    Report check plus

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