Jewelry processing will of course go to Xisi in Beijing. Take a bus and get off at Huguo Temple. Jewelry processing is like this. There are also five rings jewelry market. If you buy a loose diamond, you can also buy it. They are all old shops, wholesale and have a good reputation. Xisi is the jewelry wholesale and processing center in Beijing. I used to have a phone, but now I can't find it. There are many telephones there. Ask more questions.