Generally, the jadeite jewelry purchased in tourist attractions is a piece of jadeite, and the certificates are all authoritative certificates, but the price is generally at least about 3,000 yuan, because there are management fees and sales commission fees. Different kinds of jadeite products have different color prices, so be careful when buying.
There are both genuine and fake products, so I'm not afraid to learn more about jade identification myself. Italy is rich in knowledge of jewelry and jade.