Zhongshan Gate has a provincial jewelry testing center, and the Pearl River Road Shanshui Hotel has a municipal jewelry testing center. If a merchant brings jewelry for testing, it is very cheap, and a certificate is about 5- 10 yuan. If a citizen brings jade for testing, a certificate is 80- 120 yuan. I can discuss it with them first. 30 yuan will ask an expert to have a look, to tell the truth. I can't get the certificate. I don't know if it's okay now.