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The Diamond Grading Report.

The laboratory’s flagship document for laboratory-grown diamonds of 1.00 carat and above: complete grading results, measured proportions, plotted clarity characteristics, and grading scales, in a single certificate.

The sample report

Every element below appears on the issued document, printed on numbered security stock. Download the sample report (PDF) →

IGML
International Gemological & Minerals Laboratory
DIAMOND GRADING REPORT
LABORATORY-GROWN  ·  IGML2600147PX

REPORT DETAILS

Date of Issue06 August 2026
Report NumberIGML2600147PX
DescriptionLaboratory-Grown Diamond
Shape & Cutting StyleRound Brilliant
Measurements7.38 – 7.41 × 4.56 mm

GRADING RESULTS

Carat Weight1.52 carat
Color GradeF
Clarity GradeVS1
Cut GradeExcellent

MEASURED PROPORTIONS

Crown Angle34.5°
Pavilion Angle40.8°
Star Length55%
Lower Half78%
Girdle Thickness3.5%

PROPORTIONS

Table 57.0% Depth 61.8% 34.5° 40.8° Actual proportions of the article, measured by non-contact scan

ADDITIONAL GRADING INFORMATION

PolishExcellent
SymmetryExcellent
FluorescenceNone
Table57.0%
Total Depth61.8%
GirdleMedium, faceted
CuletNone
InscriptionIGML2600147PX
CommentsAs grown; no treatment detected

CLARITY CHARACTERISTICS

KEY TO SYMBOLS

CrystalInternal
FeatherInternal
NeedleInternal
Symbols show the nature and approximate position of the characteristics found at 10×. The diagram is a representation; not every characteristic is shown.

COLOR SCALE

D–FG–JK–MN–RS–Z

CLARITY SCALE

FLVVSVSSII

CUT SCALE

EXVGGFP
This report is a statement of gemological opinion at the date of examination, prepared under the laboratory’s published grading standards, and is not an appraisal, valuation, or guarantee. Grades reflect the judgment of at least two credentialed graders working against calibrated instruments and master comparison stones under standardized illumination. Grades are called blind against master comparison stones. The laboratory holds no inventory and issues no report on goods in which any owner or employee holds a financial interest. Any alteration voids this report. The registry record maintained by the laboratory is the authoritative version of the results stated here.
Verification QR code for report IGML2600147PX
Verify this report. The results above are duplicated in the IGML online registry. Confirm this report number at the laboratory’s verification page before relying on any copy of this document.
INTERNATIONAL·GEMOLOGICAL·MINERALS·LABORATORY·IGML2600147PX·INTERNATIONAL·GEMOLOGICAL·MINERALS·LABORATORY·IGML2600147PX·INTERNATIONAL·GEMOLOGICAL·MINERALS·LABORATORY
AUTHORIZED SIGNATURE

What the report states

Eligibility. Issued for laboratory-grown diamonds of 1.00 carat and above, loose or mounted. Stones from 0.30 to 0.99 carat receive the Card Report. Fees by carat weight are provided to trade clients at account opening.

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