In Beijing, you can go to Panjiayuan, the jewelry city in Xinjiekou and other places to find a master to help you decide.

Needless to say, Panjiayuan went to inquire.

There are several jewelry cities in Xinjiekou South and Xinjiekou North, and the jewelry cities have professional inlay and other processing.

There are also some shops around the jewelry city that do processing all the year round.

Just look for it

I hope it helps.

Good luck!