Professional words, such as quality supervision stations and jewelry colleges, use more instruments, and large jewelry appraisal instruments are also necessary.
If you are an appraisal enthusiast, a xenon flashlight, an ultraviolet flashlight and a magnifying glass are almost enough. Other small instruments are also quite professional, and they will not be used without training.
If you buy instruments, there are three domestic manufacturers, Shenzhen, Wuhan and Nanjing.