About GIA Worldwide

Established in 1931, GIA is the world’s foremost authority in gemmology. Present in 12 countries, with 7 campuses, 4 research centres and 9 grading laboratories, GIA grades and identifies some of the world’s most important gemstones.

  • GIA is a nonprofit institution dedicated to continuous education and research in the field of gems and jewellery.
  • GIA’s mission is to ensure the public trust in gems and jewellery by upholding the highest standards of integrity, academics, science and professionalism.
  • GIA created global standards to accurately determine the quality of diamonds (4Cs – Color, Clarity, Cut and Carat Weight), coloured stones and pearls (7 Pearl Value Factors™ - Size, Shape, Colour, Nacre, Lustre, Surface and Matching).
  • GIA has supported the journey of the global gem and jewellery industry through breakthrough gemmological research, unbiased analysis of gemstone quality and by providing the most respected professional credentials.

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