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GIA is a nonprofit organization that provides gemological research, education and laboratory services. Learn about gemstones, diamond origin, peridot, emerald, citrine and more from GIA's gem encyclopedia and news.
- My GIA
My Laboratory & GIA Laboratory Client Portal. Now featuring...
- Report Check
Report Check - Gemological Institute Of America | All About...
- Submit a Gem
The GIA Memo Creator makes it easier than ever to submit...
- Distance Education
Get hands-on experience in lab classes offered at GIA...
- GIA Systems Maintenance
GIA Systems Maintenance. Due to planned network maintenance,...
- Contact Us
Mailing Address GIA World Headquarters The Robert Mouawad...
- My GIA
GIA Report Check lets you confirm that the information on your diamond report matches the GIA report database. You can also access the digital report, treatment description, and report access card for reports dated on or after December 19, 2022.
- Gia Diamond Grading Report
- New! Gia Diamond Origin Report
- Gia Diamond Dossier®
The GIA Diamond Grading Report includes an assessment of a diamond’s 4Cs – color, clarity, cut, and carat weight– along with a plotted diagram of its clarity characteristics and a graphic representation of the diamond’s proportions. For standard round brilliant cut diamonds falling in the D-to-Z color range, the report also includes a GIA Cut grade...
The new GIA Diamond Origin Report contains all the unbiased, accurate data of a Diamond Grading Report, plus GIA’s scientific determination of the diamond’s country of origin and a microscopic laser inscription of the report number on the diamond’s girdle. Image-rich, interactive materials accompany the report, telling the story of the diamond’s ho...
The GIA Diamond Dossier offers the same grading information as the GIA Diamond Grading Report but without the plotted diagram. As an added security feature, the Dossier service includes a microscopic laser inscription of the report number on the diamond’s girdle. The GIA laboratory issues the Diamond Dossier for loose, natural diamonds between 0.15...
6 days ago · GIA is the world’s foremost authority on diamonds, colored stones, and pearls. Learn about our history, education, research, and standards in gems and jewelry.
GIA is the world's leading authority in gemology, offering analysis and grading of diamonds, colored diamonds, laboratory-grown diamonds, colored stones, pearls and more. Learn how to submit your gemstone, get a report and service, and find a GIA laboratory near you.
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Graded by GIA A Brilliant Legacy From the Hope diamond to the Spirit of the Rose, the Taylor Burton and the Lesotho Promise, we are trusted by museums and top auction houses all over the world to grade and research nature’s finest treasures.