About GIA Worldwide

Established in 1931, GIA is the world’s foremost authority in gemmology. Present in 13 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.


Learn more about GIA in India