Lab Reports & Services
WELCOME TO THE GIA LABORATORY
The GIA Laboratory is the world’s most trusted name in diamond grading and gemstone identification.
The GIA Diamond Grading Report, Diamond Dossier and Gemological Identification Reports offer unmatched assurance of a gem’s quality and authenticity.
With facilities in New York, California, Bangkok, Mumbai, Johannesburg, and Gaborone as well as six international service centers, the GIA Laboratory is regarded as the world’s foremost authority in gemology.
Lab Services
- Find a Lab or Drop Off Location
- Check Turnaround Time
- Verify A Report
- My Laboratory Login
- Contact Us
- Order Retail Support Tools
- Download the 4Cs Brochure
- Estimate a Cut Grade
Conducting Gem Research
Since 1931, gemological research has been one of GIA’s core activities.
Gems & Gemology
Gems & Gemology publishes the latest research on diamonds and colored stones.