See Sun.
(2) Gold, as something valuable, may symbolize either your true self, as distinct from your conscious ego, or some faculty in your psyche which, if accepted and activated, could bring you closer to your real self.
(3) Gold fruit (like the golden fleece) features in mythology as a hero’s prize for overcoming monsters or other evils. This symbolizes the rewards of facing up to the contents of the unconscious, taming those that - through neglect - have become wild or aggressive, and integrating them into your conscious life.