General Information

Established in 1931, GIA protects the public through gemological research, education, impartial gem identification and grading services, and instrument development. The world’s foremost authority in gemology and creator of the 4Cs, GIA sets the standard for determining the quality of diamonds and
performs research-based identification of colored gems and pearls.

As an independent nonprofit organization, all of GIA’s activities are governed by its mission to serve the public. Visit GIA.edu or 4Cs.GIA.edu

Mission:
GIA protects the public through research, education, laboratory services and instrument development.

Products: 
GIA offers a curriculum developed from our groundbreaking research and delivered by experts in their field. Through GIA’s education, you can acquire the knowledge and practical skills to help prepare you for success in the gem and jewelry industry. 
Visit GIA.edu/gem-education to learn more about our courses and diploma programs.

GIA’s globally recognized gem identification and grading services are built on a foundation of scientific research. Using state-of-the-art instrumentation and visual observations to evaluate every gem, GIA expert graders and gemologists deliver consistent, accurate results. With objectivity and expertise, GIA laboratories ensure the integrity and accuracy of every analyses and report issued. 

GIA’s collection of gemological instruments, from loupes to microscopes to grading and identification tools, meets the practical needs of the jewelry industry. These instruments are available for purchase through our online store, which also offers books on gems and jewelry, gemological reference charts, and subscriptions to Gems & Gemology, GIA’s peer-reviewed research journal. Visit store.GIA.edu to order from our selection of curated products.