I think this practice of jewelers is very unscientific, which will make customers distrust them, and none of us will agree. I think this practice of jewelers is very unscientific, which will make customers distrust them, and none of us will agree. I think this practice of jewelers is very unscientific and will make customers distrust them. Besides, none of us will agree to this practice. I think this practice of jewelers is very unscientific and will make customers distrust them. None of us will agree with this practice. I think this practice of jewelers is very unscientific and will make customers distrust them. None of us will agree with this practice.