GSI Certified Diamonds

The GSI laboratory is the genesis of GSI’s success. All that GSI is and all that it has accomplished started there. As the only major gem lab established in the 21st century, GSI is uniquely equipped to address continually emerging and accelerating industry challenges. For example, proprietary software allows GSI to utilize modern technological advances in order to speed up procedures and delivery time without jeopardizing quality. GSI’s international gemological laboratory also offers an unmatched variety of products and services.

More about GSI company: https://gemscience.net