Go to Mutton Hutong, next to Xisi subway station. There are many large jewelry and jade markets next to the Ministry of Geology and Minerals, and there are also gem appraisal institutions, where there are fewer fakes. Certificates are not always available. Many low-end products don't, but high-end products must.

If you feel at ease in the state-run shopping mall, then go to Caishikou Department Store, also known as Caibai. It's a shop that specializes in selling gold, silver and jewelry, and there will never be fakes there.