Gemological Science International (GSI) is an independent gemological organization committed to combining state-of-the-art technology with proven industry expertise and ethical integrity.
The only major gemological enterprise established in the 21st century, GSI has grown to become one of the largest gemological entities in the world, with offices spanning four continents.
As a global leader, GSI works in close proximity with its worldwide clients to assure that its gemological services are consistently reliable, efficient and accessible. Since its founding in New York City in 2005, GSI has continued to provide trusted gemstone identification
and grading services as well as gemological research, and a variety of educational programs designed to prepare the next generation of professionals.
From the mine to the showcase, GSI works with leading gem and jewelry companies across the globe to stay one step ahead of an ever more rapidly evolving industry.