About Us
Gemological Science International (GSI) was founded in 2005 in New York. This makes GSI the only major gemological organization established in the 21st century. GSI is a global company, with locations across four continents.
GSI is one of the largest gemological laboratories in the world by volume of goods we analyze. We set ourselves apart by leading the way with diamond and gemstone analysis and research.
The Gemological Laboratory of Choice
A Modern Gemological Laboratory
We set ourselves apart through the use of state-of-the-art technology, innovative research, and a commitment to accuracy and reliability in diamond and gemstone analysis. Our team of expert gemologists ensures the highest standards of quality and integrity in every service we provide.
Tailored Solutions at Scale
Delivering What Clients Need
GSI has proprietary, scalable laboratory processes; consistent, accurate grading; and custom solutions for your business needs, from quality assurance to drop shipping. We are one of the largest gemological laboratories by volume globally.
Serving the Jewelry Industry
GSI works across the jewelry industry, and provides custom solutions for retailers, manufacturers, and wholesalers.
Our Pillars
Integrity
All GSI gemological processes and reports are backed by a commitment to the highest ethical standards and practices. Clients depend on GSI for absolute accuracy and transparency.
Innovation
Because GSI utilizes leading-edge technologies and automated processes and software - it is better able to offer uncompromising accuracy, reliability and consistency.
Professional Service
Outstanding service is a mandate for GSI, which adheres to the highest stan- dards and focuses on providing unparalleled accessibility, accountability and excellence in all it does.
Research & Education
GSI actively shares its knowledge with both trade and consumer audiences. And it leverages its industry relationships to promote learning, communication and education programs.