The characteristic of diamond jewelry is that the diamond has formed many cutting surfaces after being processed. These cutting surfaces reflect countless rays of light under the irradiation of light so that the diamond will shine brightly. You want to get this kind of brilliant effect. The light should be used to fill the method, to play the brightness of different sides, different edge highlights, so that each edge produces a clear brightness. But if he wants to eliminate all reflections, he can use tent-style lighting, using seamless paper to set up a “tent” atop and around the pieces. Not only did he cover the perimeter and the top, but he also covered the front and cut a hole in it to get the camera in. But the hole should not be too big, just enough to fit in the lens and the light. Sometimes the lights are just outside it. Soft indirect lighting for the “tent.”