The Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry. GIA discovers new gem materials through research, identifies and grades gemstones, and shares its expertise with the public and the global gem and jewelry community. Through its world-renowned courses, laboratory services, and instruments, GIA ensures the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science, and professionalism.