An IGI certificate is an official diamond grading report issued by the International Gemological Institute, also known as IGI.
IGI is a trusted diamond grading lab that checks and records a diamond’s quality using global grading standards. For lab grown diamonds, this certificate confirms the diamond is real and properly graded.
Every grown diamond certificate includes a unique IGI report number.
This number allows you to check the diamond’s grading details online. It is one of the most important parts of the certificate.
Some diamonds have a laser inscription of the report number on them. This depends on the design and size.