For jewelry worn by a model, don’t rely on only broad soft light. Softboxes are fine for the model’s base portrait lighting, but jewelry often looks best with some bright, small point-light reflections to make metal and stones sparkle.

A good approach is:

• use standard portrait lighting for the model
• add a few small, bright point light sources aimed/positioned to create highlights on the jewelry

That’s why jewelry stores often use many bright spot-like lights. Even simple small lights can help you test the effect before the shoot. The key is balancing flattering light on the face with controlled specular highlights on the jewelry.

A ring light may reduce shadows, but it can also flatten the look, and it isn’t the main thing that makes jewelry pop. The sparkle usually comes from those pinpoint reflections rather than shadowless light.

So: two soft lights for the model can work, but consider adding small accent lights instead of depending on a ring light alone.