How to set the parameters of SLR when shooting diamond rings?

This situation is already a case of additional fill light... completely different from natural light conditions.

In this case, the light changes are extremely rich, and the shooting parameters also need to be set flexibly according to the specific situation... There is no fixed model that can be applied...

Personal opinion: As long as it is By choosing an appropriate aperture to ensure depth of field, and using low sensitivity as much as possible to ensure image quality, you can ensure a satisfactory shot.