Beijing city university Institute of Technology specializes in gem identification, please see:

Jewelry Technology and Appraisal (Jewelry Design and Manufacture) (Art)

China is short of jewelry design talents. This major is a characteristic major of our school, with rich experience in running schools and strong teachers. It has the largest gem identification instrument and a complete variety of gem specimen laboratory in Beijing.

This major is based on gem appraisal, and at the same time strengthens the ability of jewelry appreciation and evaluation, and trains appraisers and appraisers urgently needed by the jewelry industry.

Graduates of this major are employed in various gem appraisal institutes, pawn shops, national public security departments and well-known jewelry companies. It is easy to start your own business, which is the biggest advantage of this major. At the same time, we also hired a famous teacher from Beijing jewelry industry to teach in person. After three years of study and practice, you can easily enter the booming jewelry industry! Your choice will make your life as bright as a diamond!

And:

changchun institute of technology

Jewellery college

etc