How to Verify Your IGI Diamond Certificate (A Simple Guide for Buyers)

When purchasing a lab-grown diamond or loose stone with an IGI certificate, knowing how to verify its authenticity is one of the most important steps you can take as a buyer. Whether you’re creating a custom jewelry piece or choosing a meaningful engagement ring, understanding certification adds transparency, confidence, and peace of mind to your purchase.

What Is an IGI Certificate?

The International Gemological Institute (IGI) is a globally recognized gemological organization that grades and verifies diamonds, gemstones, and finished jewelry. Founded in 1975 in Antwerp, Belgium, IGI provides detailed certification reports that describe key attributes of a diamond — including carat weight, cut, color, clarity, and more — following strict international standards. 

IGI certificates are widely used in the industry and serve as an objective third-party document that confirms a diamond’s quality and characteristics. This is especially valuable for both natural and lab-grown diamonds, offering clarity on the stone’s grading and ensuring you know exactly what you’re buying. 

Why Verification Matters

Even with a certificate in hand, it’s essential to verify that the document matches IGI’s official records. This helps you:

• Confirm the authenticity of the certificate.

• Ensure the details listed (like the 4Cs) truly reflect the stone’s grading.

• Protect your investment when purchasing a custom piece or loose diamond.

• Avoid potential mismatch between physical inscription and report information. 

Every IGI certified diamond usually has a unique report number. In many cases that number is laser-inscribed on the diamond’s girdle itself — a tiny code that matches your certificate and can be checked under magnification.

How to Verify Your IGI Certificate Online

Verifying an IGI certificate online is straightforward and only takes a few steps:

1. Locate the IGI Report Number
   This number can be found directly on your certificate. If your stone has a laser inscription, it should match the report number on the document.

2. Visit IGI’s Official Report Verification Page:
   👉 https://www.igi.org/Verify-Your-Report/
   This is the official IGI site where you can enter the report number to view and confirm the certificate details. 

3. Enter the Certificate Number
   On the verification page, enter the unique report number from your IGI certificate and submit. The system will display the official report information associated with that number.

4. Review the Certified Details
   You’ll be able to confirm the 4Cs and other grading features right from the official IGI database — giving you confidence that what you’re seeing is the genuine grading report.

What You Can Learn from the Verified Report

Once verified, an IGI certificate reveals important features of your diamond, such as:

• Carat Weight — the actual weight of the diamond.

• Color Grade — how close the diamond is to colorless.

• Clarity Grade — the presence or absence of internal or external inclusions.

• Cut Grade — how well the diamond’s proportions and facets interact with light.

• Origin — whether the diamond is lab-grown or natural. 

Together, these parameters form the 4Cs, which are the cornerstone of diamond valuation and help you understand both brilliance and quality when choosing a stone.

Tips for Additional Assurance

While online verification is the best first step, here are additional ways to increase confidence in your diamond purchase:

• Check the laser inscription on the diamond under magnification — it should match the IGI report number.

• Ask for a digital copy of the IGI report from your jeweler or provider.

• Consult with a professional gemologist if you have any questions about what the report details mean.

Final Thoughts

At BOTECCI, we pride ourselves on complete transparency — from detailed lab-grown diamond grading to personalized custom jewelry design. Verifying an IGI certificate is a simple and valuable step that ensures you know exactly what you are investing in. If you ever need help interpreting a report or verifying a certificate, feel free to reach out to our team.

Verify your IGI certificate here:
https://www.igi.org/Verify-Your-Report/