Quick answer
What do the comments on a diamond grading report mean?
Comments can disclose grading or identification information that is not fully represented elsewhere on a diamond report. GIA notes that some clarity characteristics may not be plotted when they are widespread, faint, or unnecessary to support the clarity grade or identify the diamond, but may instead be mentioned under Comments. Read the exact comment in context rather than treating the presence of a comment as an automatic warning.
Key takeaways
- A Comments section is not automatically a red flag.
- Read the exact wording and connect it to the rest of the report.
- Some clarity characteristics can be mentioned in Comments rather than plotted.
- A report comment does not by itself establish whether a diamond is a good value.
- Unfamiliar or consequential wording deserves clarification before purchase.
Why reports use comments
Comments can communicate information that needs disclosure or context beyond the main grading fields.
Why some clarity characteristics are not plotted
GIA says widespread, faint, or nonessential-to-identification characteristics may be omitted from the plot and mentioned under Comments.
How to evaluate a comment
Identify what the comment actually says, which grading field it relates to, and whether it changes the purchase question.
Comments are not automatic rejection rules
Do not infer a defect, durability problem, transparency problem, or bad value merely because a comment exists.
When to investigate further
If the wording is unfamiliar or material to identity, treatment, clarity, durability, or appearance, verify it with the issuing laboratory or qualified professional before the return period expires.
CaratSignal Research
Sources and methodology
- GIA Reports: Decoding Diamond Clarity DiagramsGemological Institute of America · Researched September 28, 2026
This guide follows the approved Wave 2 / Batch 10 editorial pack and cites primary GIA sources. It organizes report evidence and buyer questions; it is not a grading, appraisal, physical gemological examination, transparency diagnosis, durability certification, insurance valuation, or resale guarantee.
Read the research methodology- First published
- September 28, 2026
- Last researched
- September 28, 2026
- Last updated
- September 28, 2026
- Research status
- published