There are many jewelry shops in Thailand, especially in Bangkok. They like to receive customers from China best, but the price is generally higher and not very affordable. However, they will never buy and sell hard. Even under the guidance of a tour guide, they are free to decide whether to buy or not.
But there is an experience. If you really don't want to buy it, don't try it on, especially after trying it on repeatedly, because people are more and more concerned after trying it on, and they are embarrassed not to buy it.