Rendering available in SF?

Am I able to render my images in multiple colors? I do jewelry modeling and would like to render the images in bi color metals and colored stones
Thank you

Not sure what you understand by rendering. But Sketchfab is a real time web 3D engine. It’s not meant to generate still images.
For your jewels, do the texturing with Blender, Substance Painter, Quixel, etc. whatever.
And do the rendering with Keyshot, Cycles, VRay, etc,etc. By that I mean : path or ray tracer rendering engines. Not real time 3D engines.

Can you be a bit more specific?
If you mean how to create sort of iridescent colors, well this could be achieved in a few ways depending on what your doing

Or do you mean you want to show your product switching between different color styles? this could be done using Sketchfab’s API