An Overview and History of GIA
The Gemological Institute of America (GIA) is a nonprofit organization that is world-renowned for its diamond grading services, gemological research, education, and laboratory services. Established in 1931, the GIA is responsible for creating the “Four Cs” of diamond quality: carat weight, color, clarity, and cut. Founded in 1931 by noted gemologist Robert M. Shipley, the […]
