Analyses and separates diamonds from simulants, laboratory-grown and potentially HPHT treated natural diamonds.
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GIA established the 4Cs (Cut, Clarity, Color, Carat Weight) - the global standards for evaluating diamond quality.
Items of significant value always come with important documentation. For diamonds, GIA standardised the nomenclature for describing its quality about 60 years ago. GIA was a pioneer in defining the processes for grading diamonds and issuing the first grading reports in the world to communicate these findings.Today, GIA enjoys a pre-eminent reputation for unrivalled consistency and integrity in identifying and grading diamonds, coloured stones and pearls.
GIA is an independent entity in every sense of the term. It is not affiliated with any retailer, wholesaler or manufacturer, which is why gem professionals and consumers everywhere consider GIA reports the benchmark for trusted gemstone analysis.