When the 4Cs of diamond grading have been established principles, and different other grading methods were being in use, the necessity arose for just a common grading technique. Consequently, GIA's 4Cs grading process would be the most widely adopted and approved standard for diamond grading. No thoughts requested returns within https://deantvutq.glifeblog.com/33601498/the-basic-principles-of-diamond-certificate-verification