Where can I find an approximate chart of total mass of metallic gold in possession of humans by centuries starting with Neolithic?
I also would like to see this detailed by civilization/culture.
The wonderful thing about gold is that it is completely indestructible and imperishable. The gold we see today is the same gold that existed bilions of years ago. The same goes for silver. Even though gold has a boiling point, the vapor created is still gold.
A count of gold in possession by humans would be impossible. There have been large ships of gold that have sank to the bottom of the ocean during the Spanish Conquests for example. Also, such chart would require that every human possesing gold throughout the history of the world would have had to reveil it. Humans are fallible and have their own thoughts, so there is a very likely chance that a lot of these gold census reports, if such reports even existed, lack a few people due to them not wanting to participate.