Established in 1931, GIA (Gemological Institute of America) protects the public through gemological research, education, impartial gem identification and grading services, and instrument development. The world’s foremost authority in gemology, GIA sets the global standard for determining the quality of diamonds and performs research-based identification of colored gems and pearls. GIA created the 4Cs,the International Diamond Grading System™ and the 7 Pearl Value Factors™, providing all who buy or sell gemstones with a common language for describing quality.
As an independent nonprofit organization, all of GIA’s activities are governed by its mission to serve the public. Visit GIA.edu