I made a birdbath for a garden design project. the stone material was made using nodes. It uses a subdivision surface modifier in the render. It was moddeled in Blender. Materials are easily adjustable in the shading tab to change colours etc.
As I only ever use blender, i have no idea if the fbx, obj and glb files exported correctly as I have no way to check them. I used the blender export system so they should be fine and ready to use.
Enjoy!