Whilst the 4Cs of diamond grading ended up founded concepts, and numerous other grading units were in use, the requirement arose for your universal grading system. Because of this, GIA's 4Cs grading system is definitely the most generally adopted and approved normal for diamond grading. One more factor influencing this https://manuelyirxe.blogthisbiz.com/41564618/diamond-certificate-check-no-further-a-mystery