How GIA Grades Your Diamond

Independent and nonprofit, GIA is considered the final word on a diamond’s authenticity and quality. GIA developed the 4Cs and the International Diamond Grading System™, the grading standard adopted by jewelry professionals around the globe. GIA screens every gemstone to identify synthetics, simulants and known treatments.

Expert gemologists examine each diamond under controlled lighting and viewing conditions, in order to provide the most rigorous assessments of a diamond’s 4Cs. Every G IA Diamond Grading Report or Diamond Dossier ® contains these assessments along with additional descriptive information and state-ofthe-art security features. R

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