I have been running our family jewelry store. For nearly a year we have been working with the gsi lab. This company provides truly top-level service, and I can say they established themselves as a truly dependable company! Every diamond is graded to the highest standards: unmatched and accurate. Specialist’s tests and grades are accompanied by reliable documentation. Moreover, all reports are available online on their database! Specialists have many years of experience in the gemological industry. They have a wide variety of formats for reports which can depend on the clients' needs.