Designing jewels

I've been playing with SDXL, SD3.5, Flux basic flows to generate a specific type of ring. I'm aware that a good prompt is not enough. I am not sure what are the best practices to design a ring as I am imagining it. My next idea (when I get back to my PC) is to:

1. Get a model/checkpoint suggestion from here
2. Use a base image of a simple ring instead of an empty latent image
3. Use a mask on it to define the area to edit
4. Use the prompt to refine that area to my specific requirements
   Any additional tips and models welcomed!
   I'll post the workflow I put together once I have it.