Historically it comes from global gold mines -> various bullion collectors. Right now the Kalgoorlie Superpit (really big hole) is wound down, however it had t

Historically it comes from global gold mines -> various bullion collectors. Right now the Kalgoorlie Superpit (really big hole) is wound down, however it had three decades of producing ~ 1 Billion (AUD) of gold per annum. Other lesser gold mines have also produced in history and others still produce today. Most gold "does nothing" .. it's shiny, it's collectable, people pile it up. It's really good for long lasting expensive space tech, it's great for decorating statues, it looks good as jewellry .. but it's essentially just 'precious'.