Gemological grading for the lab-grown era Mon–Fri 9:00–5:00 ET New York Metropolitan Area Client Intake
Reports & Services

The IGML report family.

Seven report formats covering loose diamonds, colored gemstones, and finished jewelry. Every report is numbered, registered, and verifiable online the day it is issued.

The Diamond Grading Report

The laboratory's flagship document: complete grading results, measured proportions, plotted clarity characteristics, and grading scales, in a single certificate.

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

Sample shown for format. Issued reports are printed on numbered security stock and registered before leaving the laboratory. Download the sample report (PDF) →

The wallet cards

Laminated, wallet-size companions to the laboratory’s reports: one format for loose diamonds, one for finished jewelry. The essential results, a photograph of the article, and a verification code, in the format your customer keeps.

IGMLINTERNATIONAL GEMOLOGICAL
& MINERALS LABORATORY
DATE: 06 AUGUST 2026
REPORT#: IGML2600147PX
SHAPE & CUT: ROUND BRILLIANT
CARAT WEIGHT: 1.52 CT
COLOR: F   CLARITY: VS1   CUT: EXCELLENT
MEASUREMENTS: 7.38 – 7.41 × 4.56 MM
POLISH / SYMMETRY: EXCELLENT / EXCELLENT
COMMENTS: THIS REPORT IS FOR AUTHENTICATION PURPOSES.
Photograph of the documented article
INSCRIPTION  IGML2600147PX
Verification QR codeFor terms and verification visit the IGML online registryDC-DIA-08.26
LABORATORY-GROWN DIAMOND  ·  DIAMOND CARD REPORT
IGMLINTERNATIONAL GEMOLOGICAL
& MINERALS LABORATORY
DATE: 30 JUNE 2026
REPORT#: IGML2600093C8
CARAT WEIGHT: TOTAL ESTIMATED WEIGHT APPROX. 5.86 CTW*
MINIMUM COLOR: F–G
MINIMUM CLARITY: VS1–VS2
DESCRIPTION: ONE 14K WHITE GOLD LINE BRACELET CONTAINING 58 LABORATORY-GROWN DIAMONDS, STAMPED “14K”
COMMENTS: GRADED AS THE MOUNTING PERMITS. *CARAT TOTAL WEIGHT RANGE 5.72 TO 5.98 CT. THIS REPORT IS FOR AUTHENTICATION PURPOSES.
Photograph of the documented article
PHOTO APPROX.
Verification QR codeFor terms and verification visit the IGML online registryDC-JWL-08.26
LABORATORY-GROWN DIAMOND  ·  JEWELRY CARD REPORT
IGML International Gemological
& Minerals Laboratory

Actual size 85.6 × 54 mm, sealed in rigid laminate. The Diamond Card Report accompanies every stone from 0.30 to 0.99 carat; the Jewelry Card Report is included with every Jewelry Report.

Every report we issue

Nine services, one standard. Each report is graded under the same protocols, numbered on the same registry, and verifiable by anyone.

Diamond Grading Report

The flagship certificate for laboratory-grown diamonds of 1.00 carat and above. Complete grading results, measured proportions, plotted clarity characteristics, and grading scales.
Full Document

Card Report

A compact certificate for stones from 0.30 to 0.99 carat. Full 4Cs results with polish, symmetry, and fluorescence; girdle inscription standard. Includes the wallet card.
Compact Document

wallet card

The laminated wallet-size summary shown above. Included with the Card Report, and available as a companion to any diamond report.
Wallet Card

4Cs Report

An economical single-panel statement of carat, color, clarity, and cut for high-volume programs. Identity testing and registry entry are never omitted, at any tier.
Summary Document

Gemstone Origin Report

Identification of a colored gemstone with an opinion on geographic origin where the science supports one, stated with its confidence level. Includes treatment disclosure.
Full Document

Gemstone Color Report

Identification, treatment disclosure, and a standardized color description for a colored gemstone, graded under controlled illumination against reference sets.
Full Document

Jewelry Report

Complete documentation of a finished piece: center stone grading as the mounting permits, side stone screening, metal identification, and photography of the article.
Full Document

Light Performance Analysis

Brilliance, fire, scintillation, and contrast computed from the stone’s measured geometry, printed as a light map on the report.
Add-On

Melee Screening

Batch testing of small stones in finished goods to confirm that every stone is diamond, with results documented per stone and reported per piece.
Trade Service

Laser Inscription

The report number inscribed on the girdle, visible under 10x magnification. Standard on the Card Report; available with every diamond report.
Add-On

Fees and turnaround. The laboratory’s fee schedule is provided to trade clients at account opening, with pricing by report type and carat weight. To request the current schedule, contact the laboratory.

Colored gemstones

Gemstone identification begins where diamond grading does: with instruments. Species and variety are confirmed by measurement, treatments are disclosed, and color is described against reference sets under controlled illumination.

Where the science supports an opinion on geographic origin, the report states one, together with its confidence level. Where it does not, the report says so.

A sapphire and ruby on a grading tray
Origin opinions are stated with their confidence level, never beyond it.
A grader examines a diamond line bracelet under a daylight lamp
Finished goods are examined stone by stone, as the mounting permits.

How mounted goods are graded

Grading a mounted stone honestly means saying what a mounting hides. Where a setting limits examination, the report says so in plain language. Weights are stated as calculated, and grades carry the industry-standard qualification that they were assessed as the mounting permits.

We would rather issue a precise report with stated limits than an exact-sounding one that cannot be defended.

Turnaround. Standard service runs two to five business days by report type, as listed in the fee schedule. Expedited next-business-day service is available for trade accounts. Goods received before 11:00 AM enter intake the same business day.

Speak with the laboratory

Tell us about your goods and what you need documented. We respond within one business day.

Contact the Laboratory