Gold in the dream often shows masculinity and silver femininity. If the dreaming bumps in his dream into silver or gold, this means that he has found a part of itself from whose existence he anticipated nothing. This personality portion is maybe still in the raw state, but with expenditure a little one can make something beauty from it.
At the spiritual level the Nugget shows knowledge, power and extrasensory ability in the dream. It is the core of an idea or an image.