To verify an IGI lab-grown diamond report, enter the report number on IGI's official Verify Your Report page, then compare the digital record with the document and the exact diamond offered. Confirm the laboratory-grown origin, shape, measurements, carat weight, color, clarity, finish, comments, and any inscription shown.
A matching report is important evidence about the item evaluated by the laboratory, but it does not replace review of the ring setting, metal, workmanship, sizing, or seller policies.
Start with the report number
The report number identifies the laboratory record. Enter it directly on IGI's website instead of relying only on a screenshot supplied by a seller.
Check that:
- the number returns an IGI record;
- the report type matches the item offered;
- the date and description are plausible;
- the shape, measurements, and carat weight match the listing; and
- the origin is identified as laboratory-grown when that is what is being sold.
If the number does not return a record or the resulting details differ from the product, stop and request clarification before ordering.
Educational visualization: the generic report shown contains no real report number or grading data.
Confirm the origin disclosure first
An IGI report can identify a diamond as laboratory-grown. The product listing should also make that origin clear near the word “diamond.” The US Federal Trade Commission identifies terms such as “laboratory-grown” and “laboratory-created” as appropriate ways to disclose that a diamond is not mined.
Do not treat “lab-grown” as a color, clarity, or cut grade. It describes origin. The remaining report fields describe other characteristics of the evaluated stone.
Read the shape, cutting style, and measurements
IGI's official guide to reading a laboratory-grown diamond report explains that the document can include the description, shape, cutting style, measurements, and a 4Cs assessment. Measurements are normally written in millimeters.
For an elongated stone, compare length, width, and depth with the listing. These figures help describe the actual outline and physical scale. Carat weight alone cannot establish visible size.
The shape name also matters. Oval, pear, marquise, radiant, emerald, cushion, and round are not interchangeable. Make sure the product photographs show the same shape and orientation recorded for the stone.
Educational visualization: compare the exact diamond's physical measurements with the corresponding digital record.
Understand the 4Cs without overreading them
Carat weight
Carat is weight, not direct face-up size. Compare the report's measurements alongside the carat number.
Color
For stones graded on a D-to-Z scale, the report records the laboratory's color assessment under controlled conditions. Metal color, photography, surrounding reflections, and screen settings can still affect how a finished ring looks online.
Clarity
Clarity is assessed under magnification. The grade does not tell you exactly what every inclusion looks like at normal viewing distance. Review the exact stone in clear video when available.
Cut
Do not assume every fancy shape receives the same type of overall cut grade used for a standard round brilliant. Read the actual report fields rather than importing expectations from another shape or laboratory.
Check polish, symmetry, and comments
Polish describes the quality of the finished facet surfaces. Symmetry describes the alignment and relationship of facets and outline features. Both are distinct from shape and carat weight.
The comments section may contain additional information, including disclosures relevant to the stone. Do not assume every report contains the same comments; read the exact digital record.
What does a laser inscription do?
A laser inscription may place a report number or identifying text on the diamond's girdle. It is typically viewed under magnification and can help link the stone to its report.
An inscription is an identification aid, not a quality grade and not a substitute for checking the digital record. Ask whether the exact stone is inscribed and whether the inscription can be checked before setting or during professional inspection.
Educational visualization: abstract micro-marks are shown instead of a real or invented report number.
Loose-diamond report vs. finished-jewelry report
The report type matters. An IGI loose-diamond report evaluates an unmounted stone. An IGI jewelry report may describe a finished item, its mounted gemstones, and its metal information as mounting conditions permit.
Do not assume a report for one center stone documents every accent diamond, the entire mounting, craftsmanship, or retail value. Confirm exactly what item or component the report covers.
A report does not confirm the whole purchase
Before ordering, separately confirm:
- the exact center stone linked to the report;
- accent-stone scope and whether separate reports exist;
- metal and fineness;
- ring size and resizing policy;
- setting construction and profile;
- production and delivery estimate; and
- duties, taxes, returns, customization, and aftercare terms.
These are seller and product facts, not grading-report conclusions.
The MISSISSI view
MISSISSI Fine Jewelry treats a grading report as one part of a transparent product record. The report should match the exact diamond, while the listing should separately explain the finished design, metal, setting, size, customization, and current policies.
The reliable online purchase path is simple: verify the report on the issuer's website, compare every identifying detail, review the exact ring from multiple angles, and resolve inconsistencies before production.
Continue your diamond research
- Learn how setting architecture changes the side profile in 5-Carat Oval Diamond Ring with Hidden Halo: Design Details to Check.
- Compare two different setting approaches in Hidden Halo vs. Classic Halo Engagement Rings.
- Review how the finished ring's metal affects appearance and wear in Yellow Gold vs. Platinum for Oval Diamond Rings.
Frequently asked questions
Where can I verify an IGI report number?
Use IGI's official Verify Your Report page and enter the number exactly as shown on the document.
Does an IGI report prove a diamond is lab-grown?
An IGI report can identify the evaluated stone as laboratory-grown. Confirm that the digital record and the exact stone offered match.
Does every lab-grown diamond include an IGI report?
No. Do not assume a report is included. The seller should state whether the exact stone or finished jewelry comes with one.
Is a grading report the same as an appraisal?
No. A grading report documents gemological characteristics of the evaluated item. An appraisal addresses value for a stated purpose and date.
Does the report cover the entire ring?
Not necessarily. A loose-diamond report normally covers the individual stone. A jewelry report may cover mounted components as described. Read the report type and scope.
What if the report and product page disagree?
Pause the purchase and request a written explanation. Do not assume the difference is harmless or transfer facts from another stone.