The background (HDRI) distracts from the chalice, and may be a bit too busy. For instance, the shape of the “cup” portion appears to flatten out as it nears the stem. This may be an illusion, though, caused by reflections. Try a simple 3 light set up (main light, back light, and key light). If you prefer an HDRI, try rendering with transparent set under the Render Properties:Film panel (for a straight black background but still with the reflections). A simple sweep might also work for you: a plane that starts flat underneath the chalice and angles up behind. (Make a subdivided plane and raise the back edge with proportional editing on.)
Otherwise, the model and texture look good. It has sufficient detail without being overly ornate. A less busy background may show flaws in the model that do not seem obvious here.
Thanks, this is my first gold material. I will try follow your tips.
Great job with your first gold material. To improve it a little bit increase the overall roughness a little bit and add some smudges that have a bit higher roughness than the base one.
When it comes to modeling, the overall shape looks good just make the stem a bit stronger, it looks too weak to hold the weight.
Rendering is very good, no noise but the background should be blurred, especially a low res one like this. To get that effect try using shallow depth of field in your camera settings.