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  1. GIA is an independent nonprofit organization that provides information and certification for gemstones and jewelry. Learn about its research, news, lab notes and featured stories on topics such as diamonds, topaz, amber and sapphire.

    • Report Check

      Report Check - Gemological Institute Of America | All About...

    • 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...

    • My GIA

      Now featuring one log in for My Laboratory and the GIA...

    • Visit GemKids Website

      Spanish conquistadors, Inca kings, and pharaohs treasured...

    • Gem Identification

      You will carry out testing procedures and techniques on sets...

  2. Há 2 dias · Learn about the GIA Difference, the world's leading authority on diamonds, colored stones, and pearls since 1931. Explore GIA's history, research, education, and standards in gems and jewelry, and how GIA has set the global quality standards for the industry.

  3. 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. Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone ...

    • 21 Gemology & 9 Jewelry Arts Instructors
    • Private
    • 1931
  4. These are the planet’s most valued gems. Diamonds are among nature’s most precious and beautiful creations. Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine. Citrine is the transparent, pale yellow to brownish orange variety of quartz. Established in 1931, GIA is an independent nonprofit that ...

  5. Together, we carry on GIA’s proud tradition of research, discovery, and education. 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.

  6. 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. We apply the same passion, precision and expertise that we use in grading these world-famous diamonds to grading ...

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