The sensitivity is set to the lowest, and the white balance is set according to the light you use, which is slightly lower than the actual light color temperature. For example, the color temperature of the light bulb is 3200k, and you set the camera to 3000k, which can make the diamond more white and transparent. I don't know what camera you are using, whether you have customized the white balance or manually set the white balance value, if so, it is very simple.