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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, diamonds, emeralds, peridot, citrine and more from GIA's experts and publications.
- My GIA
My Laboratory & GIA Laboratory Client Portal. Now featuring...
- Submit a Gem
The GIA Memo Creator makes it easier than ever to submit...
- LIST YOUR STORE
Search a city or postal code to find retailers who carry...
- Birthstones
Birthstones are a fun, popular and colorful introduction to...
- 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...
- GIA Locations
GIA Ramat Gan is open with limited capacity . We are...
- Diamond Essentials
This course covers how to describe diamond jewelry...
- Graduate Gemologist
The GIA Graduate Gemologist diploma program delivers a...
- 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. With Report Check, you can quickly and conveniently confirm that the information on your report matches what is archived in the GIA report database.
4 days ago · GIA is the world’s foremost authority on diamonds, colored stones, and pearls. Learn about its history, education, research, and 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.
Website. www .gia .edu. The Gemological Institute of America ( GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to ...
Gia. Gia is a 1998 American biographical drama television film about the life and times of one of the first supermodels, Gia Carangi. The film stars Angelina Jolie as Gia and Faye Dunaway as Wilhelmina Cooper, with Mercedes Ruehl and Elizabeth Mitchell. It was directed by Michael Cristofer and written by Cristofer and Jay McInerney.
Kevin Schumacher/ GIA. Color measures a diamond’s absence of color. This is because most “colorless” or “white” diamonds actually contain trace amounts of yellow, brown or gray color. The less color in a diamond, the more desirable and valuable it is. There are 23 color grades on the D-to-Z scale, with D meaning that a diamond has no ...
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