The majority of gold is purchased for investment purposes ("hard money"), only a small fraction is for industrial use. The majority of silver is purchased for industrial use, only a small fraction is purchased for investment purposes. Almost all of copper is purchased for industrial use. These three metals are structurally very different from an investment perspective. Cash is trash, fiat is going to zero. The hedge against that is sovereign hard money: Gold, Bitcoin, and Zcash. Silver and Copper is a different game.