Changshu, a local city in i query, does not have a jade appraisal center certified by a national authority, but Suzhou does. Please take the baby to Suzhou for an appraisal. The cost is not high. Remember whether it is 10 yuan or 20 yuan, and issue the certificate in two hours.
As for the specific address, Baidu, a jade appraisal agency in Suzhou, can answer that this information is not allowed, otherwise it will be regarded as an advertisement and directly block the answer.