Golden mirror is a ring made to create the ilusion of having a texture in the golden ball that actually only exists in the silver pice, the silver pice is fixed in a cross base of titanium and the golden ball appears to be floating over the patterns in the silver.

Well just to demonstrate some steps after the conception and a preeliminar drawing i like making a 3d model this one was made in Rhinoceros but Autocad or solidword areoather options ...

I usually make the render in 3D max but other programs can be used as rhinoceros itself or solidworks

And this one is jsut to show the rendered 3D model...