A Standard of Excellence


The Institution of Advanced Gemology (IAG) is an independent organisation, with head office in Asia.


IAG Laboratories are staffed by expert Diamond Graders with a host of experience, to provide impartial and accurate certification of diamonds. A steadfast commitment to understanding consumers’ interest has been the constant motivation for IAG to develop accurate certification that objectively determine the value and quality of diamonds.

How We Grade Diamonds

At every step of the grading process, special inspection, care and handling procedures are in place to protect a diamond’s identity and ensure the diamond is managed with the utmost care.