World Leader in Gemmology


Established in 1931, GIA is the world’s foremost authority on diamonds, coloured stones and pearls. A public benefit, non-profit institute, GIA is the leading source of knowledge, standards and education in gems and jewellery.

GIA’s mission is to ensure the public trust in gems and jewellery by upholding the highest standards of integrity, academic study, science and professionalism through education, research, laboratory services and instrument development.

Find out more at GIA’s Website > 

What are the 4 C’s of diamond quality?

IGI Diamond Reports
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