GIA Colored 
Stone Reports
• 28,000+ gem reference samples
• 100+ field expeditions worldwide
• 70+ researchers and gemologists
• A global network of colored 
   stone laboratories    
Our unrivaled field gemologists 
and researchers identify colored 
stone treatments and geographic 
origins with accuracy and precision,
so we can offer you trusted,
industry-leading reports that help 
earn customer confidence.
GIA Colored 
Stone Reports
GIA.edu/coloredstones
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