An IGI certificate provides an independent assessment of a diamond's quality and characteristics. Understanding each section of the report helps you evaluate a diamond with confidence and transparency.

At Venoré, our certified diamonds are accompanied by detailed IGI documentation, allowing you to understand exactly what makes your diamond unique.

Understanding the Sections of an IGI Report

• Report Number
• Diamond Description
• Shape & Measurements
• Carat Weight
• Color Grade
• Clarity Grade
• Cut Grade
• Polish, Symmetry & Fluorescence
• Proportions Diagram
• Clarity Characteristics Plot
• Laser Inscription
  

Report Number

Every IGI certificate includes a unique report number assigned specifically to the diamond.

This number acts as the diamond's identification reference and can often be found laser-inscribed on the diamond's girdle, allowing the certificate and diamond to be matched for verification purposes.

Diamond Description

This section confirms the type of diamond being graded.

For Venoré diamonds, the certificate identifies the stone as a laboratory-grown diamond and may also specify the growth method used, such as CVD (Chemical Vapor Deposition).

Shape & Measurements

This section records the diamond's shape and exact dimensions.

Examples include Round Brilliant, Oval, Pear, Cushion, Emerald, Radiant, Princess, and Marquise.

Measurements influence a diamond's visual size, proportions, and overall appearance.

Carat Weight

Carat weight measures the weight of a diamond.

While carat is often associated with size, a diamond's visual presence is also influenced by its cut quality and proportions.

A well-cut diamond can appear larger and more brilliant than a poorly cut diamond of greater weight.

Color Grade

Color measures the absence of color within a white diamond.

Diamond Color Scale

Diamonds closer to D are considered more rare due to their exceptional colorlessness.

Clarity Grade

Clarity evaluates internal and external characteristics formed during a diamond's growth process.

Diamond Clarity Scale

Most inclusions are microscopic and cannot be seen without magnification.

Cut Grade

Cut is often considered the most important factor affecting a diamond's beauty.

A diamond with an excellent cut reflects light more effectively, creating greater brilliance, fire, and sparkle.

Diamond Cut Grades

Polish, Symmetry & Fluorescence

Polish

Evaluates the quality of the diamond's surface finish.

Symmetry

Measures the precision and alignment of the diamond's facets

Fluorescence

Indicates how a diamond reacts under ultraviolet light.

These characteristics contribute to overall craftsmanship and visual performance.

Proportions Diagram

The proportions diagram illustrates the diamond's angles, percentages, and measurements.

For round brilliant diamonds, these measurements influence brilliance, fire, and light return.

Recommended Round Brilliant Proportions

Clarity Characteristics Plot

The clarity plot maps the location of internal and external characteristics identified during grading.

Each plot is unique to the individual diamond and serves as a fingerprint for the stone.

Laser Inscription

Many certified diamonds include a microscopic laser inscription on the girdle containing the report number.

This allows the diamond to be matched directly to its certificate for authentication and verification.

Full Report vs. Certificate Card

IGI offers both a detailed grading report and a simplified certificate card. While both verify a diamond's authenticity and quality, the amount of information provided differs significantly.

Full IGI Diamond Report

Comprehensive grading and analysis.

Understanding the Sections of an IGI Report

• Report Number
• Diamond Description
• Shape & Measurements
• Carat Weight
• Color Grade
• Clarity Grade
• Cut Grade
• Polish, Symmetry & Fluorescence
• Proportions Diagram
• Clarity Characteristics
• Laser Inscription

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IGI Certificate Card

A simplified summary of the diamond's key characteristics.

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Full IGI Report	IGI Certificate Card
Detailed grading analysis	Summary grading information
Proportions diagram	No proportions diagram
Clarity plot	No clarity plot
Additional grading data	Limited grading data
Ideal for detailed evaluation	Ideal for quick reference

Included in a Full IGI Report

✓ Measurements
✓ Cut Grade
✓ Polish & Symmetry
✓ Fluorescence
✓ Proportions Diagram
✓ Clarity Characteristics Plot
✓ Growth Method (CVD)
✓ Additional Comments

Included in a Certificate Card

✓ Carat Weight
✓ Color Grade
✓ Clarity Grade
✓ Shape & Cut
✓ IGI Report Number

Why Venoré Prefers Full IGI Reports

A diamond's beauty is determined by more than carat weight, color, and clarity alone.

Factors such as cut quality, proportions, polish, and symmetry play a significant role in overall brilliance and performance.

For this reason, Venoré favors diamonds accompanied by detailed IGI documentation whenever available, ensuring complete transparency and confidence in every purchase.

Independent Verification

Every diamond is assessed by an independent gemological laboratory.

Complete Transparency

Detailed reports provide visibility into every important grading characteristic.

International Standards

Diamonds are graded using globally recognized criteria.

Greater Purchase Confidence

A comprehensive report allows clients to evaluate a diamond with clarity and peace of mind.

Independent Verification • International Standards • Complete Transparency • Purchase Confidence