Now you must make it clear in advance when you enter the store, and they all take tourists into regular stores, which are more famous in the local area.
However, it cannot be ruled out that some bad tour guides lead tourists into bad shops and deceive consumers.
There are indeed some shops that give tour guides kickbacks, but not many. Moreover, on the one hand, these things can't be bought elsewhere, on the other hand, even if they can be bought elsewhere, they are more expensive than those you buy locally.
When you travel to Hong Kong, you usually go to a jewelry store when you arrive in Hong Kong. Including Jin Supreme, are regular jewelry stores, and major domestic shopping malls also have counter brands.
Zhuhai, if written on the travel itinerary, should not be a fake jewelry store.
But you have to keep your eyes open to prevent being fooled.