The quality of the ring can be observed from the following aspects. The first is the technical level. A good quality ring must be made of suitable materials and exquisite materials. Fine processing. Smooth, good quality, no gouge marks, no burr; The pattern combination of the ring is harmonious, fine and clear, and the pattern is smooth. Circular symmetry, moderate width; If it is a gold-plated or gold-plated ring, its surface should be bright and uniform, with the same color, and there should be no pores, black spots or dull luster at the corners and concave-convex joints; The solder joints shall be smooth and free from virtual welding; The inlaid gems are firm and reliable, with no signs of looseness, smooth feet, moderate size and good symmetry. Measure the torus and foot again to see if they are suitable. Generally speaking, the bearing surface is slightly heavier than the corner, but it is not good to be too heavy. In this case, the ring will fall to the abdomen of the finger. The method of inspection is to put the ring on the little finger first, keep it loose and shake it gently, so that the ring face does not turn to the lower end of the flat finger. Whether the shape of the ring meets the designer's requirements is the third aspect that must be checked. If it is a symmetrical ring, its pattern and shape must not deviate from the center or be symmetrical on both sides, or be symmetrical around, and there must be no unevenness or size inconsistency on both sides of symmetry. Generally, the gemstone embedded with gem ring is placed in the center, and the teeth of the gemstone and Ingotto must be closely matched, and the smaller the gap, the better. Because Japanese teeth should be strong, moderate in size and burr-free. The ring must be easy to remove. The moving ring must meet smoothly, move as a whole when opening and closing, be flexible enough, and do not break after opening and closing for many times.