How to identify antique vases

1, first check whether the bottom of the bottle is stable. Put the vase on a flat surface and touch it gently to see if it will shake. 2. Check whether the bottle color is uniform. In this respect, special attention should be paid to colored vases. However, the color difference shown below does not belong to this problem, because the vase is blown by hand, and the convex part will fade, which is a normal phenomenon. 3. It is necessary to check whether there are large black objects on the surface of the vase, which is caused by the incomplete melting of the raw materials for making the vase. If the particles are extremely small, it is not a big problem, but if they are larger than 5mm, you need to contact the seller to propose a replacement product. 4. Check whether there are a lot of bubbles on the surface of the vase (except intentionally made bubble vases). If there are many bubbles and they are concentrated together, there are no bubbles; If the bubble diameter is too large, it is unacceptable. The number and diameter of bubbles are relative to the size of the vase. If the bottle mouth of a vase is cut, it depends on whether there is stubble on the bottle mouth. If the bottle mouth of a vase is open, it depends on whether the bottle mouth is uneven.