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How to Read a Lab-Grown Diamond Report

Jewel Eternal · Updated October 3, 2026

Start a lab-grown diamond report with the issuer, report number and laboratory-grown identity. Then check the individual stone’s measurements, quality information and any stated growth or treatment details. Read the actual document for the stone being supplied, rather than relying on a listing’s general sourcing description.

This is a practical reading checklist. The fields and terminology depend on the laboratory, report type and issue date. For the quality basics, see our diamond 4Cs guide.

First confirm which document you are reading

Ask whether the document describes a loose center stone or a finished piece. IGI explains that mounted-stone assessments are provided as the mounting permits. Its loose-stone and finished-jewelry reports should not be assumed to have identical scope.

A report for a center stone is not automatically documentation for every accent stone or for the ring’s metal. Confirm which elements your document actually covers. For the broader distinction between documents, use our existing appraisal versus grading report guide.

Read these details in order

Detail What to confirm
Issuer and report number The laboratory named on the document and the exact number to check with that issuer.
Gemstone identity The description explicitly identifies laboratory-grown diamond.
Shape and cutting style They match the stone selected for your design.
Carat and measurements Weight and millimeter dimensions belong to the supplied stone.
Quality information Read the grades or assessment categories actually printed, including any polish, symmetry and cut entries.
Comments and inscriptions Review what is stated; ask for clarification when needed.

IGI’s report-reading guide describes the identity, cutting style, measurements and 4Cs information in its diamond reports. Use the issuer’s explanation for the specific format you have.

Why a current GIA lab-grown assessment looks different

Beginning October 1, 2025, GIA’s lab-grown diamond quality assessments classify qualifying stones as Premium or Standard. Premium requires all of the Premium criteria; a combination of Premium and Standard criteria is classified Standard. The criteria include color, clarity, polish, symmetry and applicable cut assessment.

These categories are not a one-to-one replacement for an individual D–F color and VS1-or-better clarity sourcing requirement. In particular, Standard includes a broader color range than JE’s target. Confirm the supplied stone’s specific supporting details instead of assuming that Standard automatically meets the target.

Read GIA’s published assessment criteria. GIA states that its older laboratory-grown diamond reports remain valid; a different format alone does not invalidate an older report.

Growth and treatment comments need careful reading

Where the document states a growth process or post-growth treatment information, read that wording as information about the documented stone. IGI says growth-process and treatment details may be noted in its comments section upon request. Do not infer “untreated” or a specific growth method from a blank field.

If this information matters to your purchase, ask what is known and what is documented before confirming the stone. See IGI’s laboratory-grown diamond report service for the stated reporting scope.

Check the issuer’s record and the stone match

Use the laboratory’s own website to check a report number where its verification service is available. IGI provides a report verification service. Compare the returned details with the document you were given.

A matching online record is one step. Ask how the actual supplied stone is matched to that record, including any available inscription check by the supplier or jeweler. An online number lookup by itself does not inspect the physical stone in your ring.

What to confirm for a Jewel Eternal order

JE’s lab-grown diamond sourcing target is D–F color and VS1 clarity or better. Ask for the individual supplied grades and whether a report accompanies your selected stone. The target is not a promise of all D/VVS diamonds, a particular issuing laboratory, or a report with every accent stone.

Keep the approved design and stone materials clear: a lab-grown diamond version uses lab-grown diamonds throughout its center and diamond accents. Explicit colored gemstone designs keep their stated sapphire or ruby details.

A useful inquiry is: “For this design and selected stone size, which individual grades will be supplied, what documentation is included, and how will the center stone be matched to it?”

Save the final stone confirmation and supplied documents with your receipt. Our ownership documents guide helps keep the ring’s records together.

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