Or go to Beijing to be the most authoritative inspection certificate in China, the National Jewelry and Jade Quality Supervision and Inspection Center (national level).
Datong Yinxing Gold Store can be inspected and appraised, but it is not an authoritative organization. A formal jewelry appraisal center needs the approval of the state, and it can't be opened by any institution or jewelry company if it wants to. I'm from Datong. I have worked in the jewelry industry for several years, and I am familiar with jewelry.
In terms of price, the price of a single product in the provincial appraisal center is 50- 100 yuan/piece. National level 100- 150 yuan/piece, if it exceeds one carat, the cost will increase. The related prices are listed in the online search and the charging details of major testing centers.
As the certificate of GIA American Jewelry and Diamond Testing Center, the price is more than three times higher than that in China.