HOW GIA GRADES YOUR DIAMONDSIndependent and nonprofit, GIA is considered the final word on a diamond’s authentiHcity 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, simulates 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 GIA Diamond Grading Report or Diamond Dossier® contains these assessments along with additional descriptive information and state-of-the- art security features. Regarded as premier gemological credentials by international gem professionals and fine jewelry houses, GIA Reports accompany the world’s most legendary diamonds – and now, quite possibly, yours.