A diamond certificate is an independent, expert assessment of a diamond’s quality. It is your proof of exactly what you are buying. Every Rings Of USA diamond over 0.30ct is graded by one of the world’s most respected laboratories.
GIA
The Gemological Institute of America created the 4Cs and the International Diamond Grading System. A GIA report is the global benchmark for consistency and trust.
IGI
The International Gemological Institute is the largest independent lab and the leading authority for grading lab-grown diamonds, with reports recognised worldwide.
What’s on a Certificate
Each report is a detailed scientific document. Here is what you’ll find:
Carat weight, measured to the hundredth of a carat
Cut grade, polish and symmetry
Colour grade on the D–Z scale
Clarity grade with a plotted inclusion map
Fluorescence and proportions
A unique report number, often laser-inscribed on the girdle
The Rings Of USA Promise
Every certified diamond is supplied with its original report. We also provide a full appraisal for insurance, and a lifetime warranty covering manufacturing defects. If a report number is laser-inscribed, you can verify your exact stone directly with the issuing laboratory.
