When purchasing diamond jewelry especially a lab-grown diamond one question matters most:
What does IGI certify?
If you see “IGI Certified” on a diamond report, what does that really mean? And why is IGI certification important when buying lab-grown diamonds?
Let’s break it down clearly.
IGI stands for International Gemological Institute, one of the world’s leading independent diamond grading laboratories, founded in 1975.
IGI specializes in grading:
Today, IGI certification is widely used for lab-grown diamonds globally.
IGI does not determine retail price.
IGI certifies quality, characteristics, and authenticity.
Here’s exactly what IGI evaluates:
IGI confirms whether the diamond is:
This ensures complete transparency when purchasing an IGI certified lab grown diamond.
Every IGI diamond report includes the internationally recognized 4Cs:
Precise measurement of the diamond’s weight.
Graded from D (colorless) to Z.
Assessment of internal inclusions and surface blemishes.
Evaluation of proportions and craftsmanship that determine brilliance and sparkle.
An IGI grading report includes:
These technical specifications directly impact light performance and brilliance.
IGI evaluates the finishing quality and precision of facet alignment.
Grades typically range from Excellent to Poor.
Assessment of how the diamond reacts under ultraviolet (UV) light.
Many IGI certified lab grown diamonds include a laser inscription on the girdle with a unique report number for verification and traceability.
Lab-grown diamonds are real diamonds identical in chemical, physical, and optical properties to natural diamonds.
However, independent certification is essential to:
Without certification, you rely solely on the seller’s claim.
With IGI certification, you have independent verification.
Yes.
IGI is one of the most commonly used grading laboratories for lab-grown diamonds worldwide.
Many fine jewelry brands rely on IGI certification for their lab-grown collections.
It is important to understand that IGI does not:
IGI provides objective grading based on international standards.
Yes. IGI is one of the leading grading laboratories for lab-grown diamonds globally.
Yes. IGI certification ensures transparency and accurate grading.
It is not recommended, especially when investing in fine jewelry.
At Tee Tee&Co. , lab-grown diamonds above 4mm is IGI certified.
We believe:
Transparency builds trust.
Trust builds lasting value.
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