Analyses and separates diamonds from simulants, laboratory-grown and potentially HPHT treated natural diamonds.
Illustrate your way to a promising future. Learn how to take your great ideas and illustrate them just like professional designers.
GIA established the 4Cs (Cut, Clarity, Color, Carat Weight) - the global standards for evaluating diamond quality.
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GIA's ground-breaking research and unbiased grading and analysis set the global standards that protect the gem-buying public. With campuses, research centres, and laboratory facilities around the world, GIA is the world's foremost authority in gemmology.
Assessment of authenticity and quality for diamonds in the D-to-Z color range from GIA, creator of the 4Cs
Assessment of color origin and quality based on GIA's color grading system for diamonds outside the D-to-Z range.
Identification of laboratory-grown diamonds, ensuring disclosure through laser inscription and digital-only reports.
Documentation of the specific attributes of pearls and pearl jewellery, including mollusc type and growth environment.