GIA is the abbreviation of the Gemological Institute of America, many people are confused with the real meaning of the certificate it issued all thought that it in fact is a proof of the gem certificate, and even many gemologists industry insiders such thatHowever, as long as the landing to be Gemologist Institute Web site, you can see, the true meaning of the certificate issued by GIA is a gem identification of quality grading report and a certificate is not what we understand, of course, the GIA has beenannounced this information on their websites, but does not seem to completely reverse the people on this understanding, I think it may need a process.