Geological University, Wuhan and Beijing all have jewelry majors.
Qingdao Economic Vocational College also has a jewelry appraisal major.
Jewelry College of China Geo University has a general college entrance examination. If you are a senior, you can take this.
Adult education also has undergraduate and junior colleges. If you are a secondary school student or have already worked, you can take this test. Unified recruitment and adult education are both jewelry appraisal (and jewelry design) majors, and they can take gic certificate.
If you don't want to go to school again, you might as well learn gic jewelry appraiser qualification certificate. Dida Jewelry College has a certificate training class every year. You can take the training and then take the gic exam.