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  1. www.gia.edu › gia-aboutThe GIA Difference - GIA.edu

    Hace 5 días · Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry.

    • My GIA

      My Laboratory & GIA Laboratory Client Portal. Now featuring...

    • Graduate Gemologist

      Graduate Gemologist ® Program. The GIA Graduate Gemologist...

    • 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...

  2. www.gia.edu › emerald-history-loreEmerald History and Lore - GIA

    Hace 1 día · Thailand’s most sacred religious icon is called the Emerald Buddha, even though it’s carved from green jadeite. The first known emerald mines were in Egypt, dating from at least 330 BC into the 1700s. Cleopatra was known to have a passion for emerald, and used it in her royal adornments. Emeralds from what is now Colombia were part of the ...

  3. www.gia.edu › emerald-descriptionEmerald Description - GIA

    Hace 2 días · Emerald is the green to bluish green variety of beryl, a mineral species that also includes aquamarine as well as beryls in other colors. Gem experts differ on the degree of green that makes one stone an emerald and another stone a less-expensive green beryl. Some people in the trade tend to give the name emerald to any green beryl colored by ...

  4. 4cs.gia.edu › interactive-4cs › colorDiamond Color | Gemological Institute of America - 4Cs

    Hace 2 días · About. Diamond Color. The color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value.

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  6. www.trymintly.com › blog › how-to-get-gemstoneHow to get Gemstone Certification from a Lab - Mintly

    Hace 2 días · Top Gemological Laboratories. Here are some of the most respected gemological labs globally: Gemological Institute of America (GIA): Renowned for its rigorous grading standards. International Gemological Institute (IGI): Known for its comprehensive grading reports. American Gem Society (AGS): Offers precise cut grading and certification.

  7. www.professionaljeweller.com › gia-marks-90thGIA marks 90th anniversary of Gems & Gemology

    Hace 5 días · The Gemological Institute of America (GIA) has released the Spring 2024 edition of Gems & Gemology (G&G), marking the 90 th anniversary of the journal.. This issue presents research studies on coloured stones and treatments, recaps the Tucson gem shows, spotlights an impressive garnet necklace, and contains the annual G&G Challenge quiz.

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    • Gemological Institute of America (GIA) - Silver Winner - 2015 New York ...

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  9. www.stuller.com › brand › giaGIA® | Gemological Institute of America | Precious Gems

    Hace 3 días · GIA ® is the leading source in knowledge and education for diamonds and gemstones. The nonprofit organization has made countless innovations in the field of gemology and continues to educate and enable jewelers of the future. Browse Stuller's inventory of GIA products.