More over, prestigious hotels generally attract quality shops. Assess the sales assistants. Take your time, never let a shop assistant pressure you into a purchase. Obtain a receipt for goods bought and make sure it is correct before leaving the shop. If you are shopping for Thai gold chains or bracelets, you should make these purchases at large gold shops, not in jewelry shops.
Thai gold is very beautiful but very malleable.
Ultimately, your best guide is what you like. Don't, for example, buy gems or jewelry for the purpose of resale or investment. They may have such appreciation potential, but there are no guarantees. Shop for pleasure not for profit.