About GIA Worldwide

GIA LaboratoryEstablished in 1931, GIA has since been considered the world’s foremost authority in gemmology. It is a multinational organisation with presence in 14 countries, with 11 schools, 4 research centres, and 9 prestigious laboratories grading the world’s most important gemstones.



  • GIA is a not-for-profit organization dedicated to continuous education and research in the field of gems and jewellery
  • GIA’s mission is to ensure public trust in gems and jewellery by upholding the highest standards of integrity, academics, science, and professionalism
  • GIA created global standards to accurately determine quality of diamonds (4Cs - Cut, Colour, Clarity 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 gems and jewellery industry for over 8 decades now - whether it is breakthrough gemmological research or unbiased analysis of gemstone quality or by providing the most respected learning credentials.