a gold shader with surface imperfection with fast rendering (sample picture rendered in full hd in 7 minutes)
nope, it use the new pbr shader of 2.79, but you can achieve the same result with a mix of diffuse/glossy and a fresnel factor, just keep the main colorramp for the color and plug the normal to both shaders.
ps : all textures included, environnement maps and imperfection map, that's why it is so heavy.