An IGI certificate is an independent, lab-verified assessment of your diamond’s cut, color, clarity, and carat weight, the same “4Cs” that define value and beauty across the industry.

In our day-to-day grading comparisons at Rings.com, IGI tends to be especially consistent with clarity assessments for lab-grown diamonds. This is an important advantage when you’re buying online and relying on accuracy. 

We sometimes compare stones graded by multiple labs, and IGI’s lab-grown clarity calls tend to be the most predictable across batches.

With IGI, you’re getting confirmation that your diamond is:

•Authentically lab-grown

•Accurately graded by strict standards

•Fully traceable and verifiable online

Every IGI certificate includes:

•A unique report number tied to your individual diamond

•Verified 4Cs grading

•Laser inscription on the girdle for identification

•Anti-forgery security features

Additional insights from our jewelers:

• IGI clearly lists the diamond’s growth method (HPHT or CVD), which helps buyers understand performance differences.

•IGI reports show fluorescence intensity, which can impact brightness in some lighting conditions.

•IGI’s clarity plotting often makes inclusions easier to visualize compared to other labs’ diagrams.

In short, the IGI certification offers clarity, accuracy, and confidence, which are the essentials of a smart diamond purchase.