I know that there are colleges and universities with jewelry specialty in China: China Geo University, Beijing and Wuhan all have this specialty, Guilin Institute of Technology, Tianjin Business School, and the former Changchun Institute of Geology. Colleges and universities usually offer jewelry design and appraisal, but the processing of this piece is generally only introduced in the course, which is more practical for teachers and venues.

You can call the relevant school again.