What is gsi gemological science international? Gemological Science International (GSI) is a recently established for-profit organization. This commercial laboratory has been around for a few years, not decades like other lab organizations. It’s the only major gemological lab to be founded in the 21st century.Why choose gemological science international? We at Gemological Science International (GSI) have a vision: to create a modern, state-of-the-art diamond grading lab that takes advantage of the latest breakthroughs in diamond grading. To do this, we reengineered the diamond grading process and founded it on foolproof cutting-edge technology and automation.Why choose gsi for diamond grading? While this continues to be standard practice for all laboratories, GSI has enhanced this process by using advanced technology and intelligent software. We at Gemological Science International (GSI) have a vision: to create a modern, state-of-the-art diamond grading lab that takes advantage of the latest breakthroughs in diamond grading.Why choose gsi research? Gemological Science International research department is at the forefront of the rapidly changing processes related to treatments of diamonds and gemstones, synthetic technologies, and many others. GSI openly shares research findings with others in the trade.