First: If the word "jade" is marked in the column of the appraisal result of the appraisal book, it means that this jade is a natural A-grade jade.

Second: If the column of the appraisal result on the certificate is marked with the words "jade (treatment)", "jade (glue injection)", "jade (B goods)" or "jade (optimization)", it means that it is B goods jade.

Third: If "Jade (Dyed)" is marked, then the corresponding jade is Grade C jade.

Fourthly, if the identification results are marked with "artificial glass", "Xiuyu" and "Ma Laiyu", it is obvious that it is not jadeite at all, but a fake jadeite.

The reference comes from a piece of jewelry:/article-19257.html.