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Learn more. Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.
- My GIA
My Laboratory & GIA Laboratory Client Portal. Now featuring...
- Report Check
Report Check - Gemological Institute Of America | All About...
- Analysis & Grading
GIA is the world’s most trusted name in diamond grading and...
- Contact Us
Mailing Address GIA World Headquarters The Robert Mouawad...
- Submit A Gem
The GIA Memo Creator connects directly to your client portal...
- LIST YOUR STORE
Search a city or postal code to find retailers who carry...
- Visit GemKids Website
Outdoor School: Rock, Fossil, and Shell Hunting. The...
- Diamond Grading Reports
GIA Diamond Grading Report. The GIA Diamond Grading Report...
- My GIA
GIA reports represent the highest standard of reliability, consistency and integrity. And now, GIA Report Check is available for all GIA reports, providing you with an additional level of assurance.
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- 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...
GIA ensures the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science and professionalism through education, research, laboratory services and instrument development.
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.