No one ever talks about the Gold Age. When did the Gold Age begin? Or the Silver Age?
The closest thing to a silver age was the Spanish conquest of what’s now Bolivia. The silver deposits there were being mined in Precolumbian times, but the Spanish efforts dwarfed it. It’s been estimated that 30-40 percent of all the silver ever mined came from there.
There’s never been a Gold Age, and never will be. :^)