Jewelry photography. Everybody help.

Shooting with 100mmf2.8, it is recommended to use black background or black reflector;

Light source, black can try single light;

Also, many fake-looking effects in magazines were shot with hundreds of thousands of 120 digital cameras.

But your equipment is not bad, probably the choice of lighting and background;

Also, if you use a photographic table, the white on both sides of the photographic table is already very soft. It is best not to add soft light to the external light source. It is best to use a point light source (such as a spotlight, such as a metal halide lamp) to create a sense of layering.

There is also white balance, buy a standard gray card to define white balance;

Late PS is also very important. If you think the color of the gem is wrong, you can buy a standard color card for calibration, and if the display is high-end, you can also buy a display calibrator.