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GIA is a nonprofit organization that provides research, education and laboratory services for gem and jewelry professionals and enthusiasts. Learn about gemology, diamond origin, field gemology, AGS Ideal Report and more.
- My GIA
You can manage your team members and provide access to My...
- Report Check
- Submit a Gem
The GIA Memo Creator makes it easier than ever to submit...
- Contact Us
Mailing Address GIA World Headquarters The Robert Mouawad...
- 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...
- Birthstones
Birthstones are gemstones that represent each month of the...
- GIA Facetware
GIA Facetware ® is a free online service that allows you to...
- Programs & Courses
One of the most sought-after gemology credentials, the GIA...
- Diamond Essentials
This course covers how to describe diamond jewelry...
- 4Cs of Diamond Quality by GIA | Learn about Diamond Buying | What are the Diamond 4Cs
- Learn What Diamond Color Is and What it Means | GIA 4Cs of Diamond Quality
- Learn How to Buy a Diamond with the GIA Diamond Buying Guide | 4Cs of Diamond Quality by GIA
- GIA Diamond Grading Reports | 4Cs of Diamond Quality by GIA
- Laboratory-Grown Diamonds (Diamonds Grown in a Lab) | GIA
- Learn What Diamond Cut Actually Means and All About Diamond Cut Grades| 4Cs of Diamond Quality
- About GIA Diamond Grading | 4Cs of Diamond Quality by GIA
- Grading the Diamond 4Cs | GIA Diamond Grading & Reports | 4Cs of Diamond Quality by GIA
- My GIA
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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.
2 days ago · GIA is the world’s foremost authority on diamonds, colored stones, and pearls. Learn about its history, education, research, and quality standards in gems and jewelry.
- Gia Diamond Grading Report
- New! Gia Diamond Origin Report
- Gia Diamond Dossier®
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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...
Learn about the different types of GIA reports for loose, natural diamonds, including the new Diamond Origin Report and the Diamond Dossier. Find out how to read a GIA report and what a laser inscription is.
My GIA is a portal for GIA students and clients to access online courses, laboratories, and reports. Log in to register, pay, update, and manage your account information and grading results.
GIA is the world's foremost authority in gemology, offering unbiased and accurate assessment of diamonds, colored stones, pearls and unknown materials. Learn how to submit your gemstone, view reports, find a jeweler and more.
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