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About GIA A Tradition Of Science and Education
Established in 1931, 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.
Welcome to GIA.PlayA
Students around the globe turn to GIA for the knowledge, skills, and credentials that launch successful gem and jewelry careers.LEARN MORE
The world leader in gemological research, GIA’s breakthrough discoveries deepen our understanding of gemstones and the world.LEARN MORE
Through research, education, and unbiased gem grading and analysis, GIA strives to protect the gem and jewelry buying public by setting global quality standards.LEARN MORE