In this image are the same two renederings without environment mapping.

As you can see it doesn't look as gold and as I said before I haven't the appropiate shader for gold. What made look as gold were the reflections even if fake.

The second interesant thing was that in the second image where the gold look much better I used instead of Phong (left) the Lommel-Seeliger shader (right), nothing to do with gold and metals, this shader is made for rendering the Moon!!!

The Lommel-Seeliger shader produce a strong illumination at glazing angles, so if it made gold look better it means that gold has strong reflections at glazing incidence angles.

 

Stupidity also evolves!