Jewelry products should also have after-sales warranty certificate. For example, if you buy a mosaic, who will you go to and who will you hire to do the cleaning and maintenance in case the auxiliary stone of the mosaic falls? If you don't want to bring it and want to change it later, it will be considered comprehensively. If you just want to buy a piece of jewelry, you can consider it. If it is cheap, it is of little value. If it's expensive, it's meaningful for several years. I recommend you to go to a regular store or buy it online.