Gemological Science International (GSI) is a global gemological laboratory that provides certification and testing of diamonds and diamond jewelry. GSI provides independent, third-party screening, detection, and testing of diamonds and diamond jewelry to the major retailers in the United States. GSI’s services help ensure that jewelry is accurately represented and gives jewelry buyers confidence in their purchases.

In the video below, GSI will give you a look inside its state-of-the-art laboratory and show you how diamonds are tested for their growth origin – demonstrating a proven and scalable process to identify and separate natural diamonds from laboratory grown diamonds in jewelry.