1, magnifying glass, can be used to see the subtle features of jade, such as acid corrosion, growth lines and so on.

2, strong light flashlight, polished to see the internal structure of jade, cracks and other defects.

3. A small steel knife is used to test the hardness of jade.

4, color filter, used to identify whether jadeite is dyed.

5, jewelry scale, used to compare grams of weight, test the density of jade, etc.