Why are there three kinds of GIA coloured diamond reports?

The GIA Coloured Diamond Grading Report contains the same comprehensive diamond 4Cs information as the GIA Diamond Grading Report. The GIA Coloured Diamond Origin Report contains the same comprehensive diamond 4Cs information as the GIA Coloured Diamond Grading Report as well as providing the geographical origin of the diamond. The GIA Coloured Diamond Identification and Origin Report (the “colour-only report”) is limited to colour grade and the origin of the colour (natural or treated). Click here to view a fully detailed comparison of the three kinds of GIA coloured diamond reports.