Writing "jade" on the conclusion of the jade certificate indicates that it is A goods; Write "jade (pickled and filled with glue)" to indicate that it is B goods; Write "jade (dyed)" to indicate that it is C goods; Write "jade (dipped, glued and dyed)" to indicate that it is B+C goods.
In the jewelry industry, goods A refer to natural jewelry without any artificial chemical treatment, and its texture, color and structure are all natural. Take jadeite as an example. A goods are pure natural jadeite, only carved and polished. Without any chemical treatment, there is no artificial forgery such as high temperature and high pressure.
Goods A refer to natural jadeite without any artificial chemical treatment, and its jade quality, color and structure are all natural. Jade A goods from the original stone to the finished product or semi-finished product only adopt physical processing instead of chemical treatment, but the appearance and shape of jade have changed, but the internal structure of jade has not changed.