Set it up manually or use your camera. Set it up manually or use the camera's automatic mode and check the results. Be sure to turn off other light sources in the studio, such as ceiling lights and lamps, as they could ruin the color of your diamonds and other gems. If you use multiple light sources, choose those that have a uniform color temperature, which refers to the coldness (5000 K and more) or the heat (2700-3000 K) of the light, and leave the white balance setting in automatic mode.
Product and e-commerce photographs are the images you'll see online or in a product catalog. Usually, these images are taken on a seamless solid color background. I photograph fine jewelry with gemstones and small diamonds, and capturing the details and cutting the stones requires good resolution and a sharp lens. The depth of field is minimal when shooting so close.
Tilts and swings aren't the solution with small objects if you want them to be sharp everywhere when you're shooting very close. The stacking and composition of spotlights are widely used. However, jewelry creates a series of dilemmas for the colorist that are not always anticipated by what is taught to jewelry designers in a typical art class.