GIA DELIVERS RESULTS YOU CAN TRUST
GIA’s groundbreaking research and unbiased grading and analysis set the global standards that protect the gem-buying public. With campuses, research centers, and laboratory facilities around the world, GIA is the world’s foremost authority in gemology.
The GIA laboratory
THE WORLDS FOREMOST AUTHORITY IN GEMOLOGY
GIA laboratories are staffed by expert scientists and gemologists working with state-of-the-art technology.
Advanced instrumentation and experienced visual observations deliver consistently accurate results.
All gemstones are analyzed under complete client anonymity to ensure objective analysis.
As a non-profit organization, GIA operates independently of commercial and private interests, political lobbies and advocacy groups.
GIA reports are the benchmark of analysis and grading, and those who buy, sell or curate the world’s most important gems rely on GIA.