Start with the report type, number, date, and stone description. Then read measurements and applicable quality fields, use Report Check, and remember that a grading report is not an appraisal.

A field-by-field guide to reading a GIA natural diamond grading report, checking the archived record, and keeping grading separate from appraisal, ownership, and current condition.

What this guide covers

Confirm the issuing laboratory, exact report type, number, and examination date.
Match the report description and measurements to the stone using qualified help when needed.
Keep report verification separate from valuation, ownership, and current-condition decisions.

Read the report from identity outward

1 — Name the report
Identify the laboratory, natural or laboratory-grown scope, report type, number, and date before reading any grade.
2 — Match the description
Compare shape, cutting style, carat weight, and millimeter measurements with the submitted or offered stone.
3 — Read quality and disclosure fields
Review color, clarity, applicable cut, finish, fluorescence, comments, treatments, and diagrams only where that report provides them.
4 — Check the archive
Use the issuing laboratory's current verification service and escalate any mismatch before relying on the document.

Four groups of information

Identity

Report number, examination date, shape, cutting style, weight, and measurements help describe the examined stone.

Quality

Color, clarity, and applicable cut and finish fields use the laboratory's stated system and eligibility.

Characteristics

Plots, comments, proportions, fluorescence, and treatment notes can add identifying or interpretive context.

Limitations

The report records an examination under stated methods; it does not state current monetary value or ownership.

Verification is not physical matching by itself

Scope
Report Check confirms archived information, not the present custody, condition, seller, ownership, or value of the object in front of you. A qualified examination is needed when the match matters.

Report questions

Is a GIA report an appraisal?

No. GIA says its report provides technical identity and quality information and does not state an appraisal value.

Does a matching report number prove the stone is the same?

Not alone. Compare measurements and identifying characteristics and seek qualified examination where authenticity or condition is consequential.

Continue exploring

Read the report fields
Browse stones

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