For thousands of years, gold has been valued for its beauty, flexibility and rarity. According to the World Gold Council, there are currently about 205,238 tonnes of pure gold in state reserves, bank vaults and private collections.
This number may seem overwhelming until you realize that just one cubic meter of gold weighs over 19 tons. Estimating how much gold actually exists on Earth is much more difficult, but there is also some important data.
For example, a chemical analysis of rock samples taken in different parts of our planet shows that out of a billion parts of the total mass of the earth's crust, gold averages only a few parts.
This means that if we evenly remove a kilometer-long layer of soil across the Earth and process it, we will get about one million tons of gold.
However, no one will do that because such a product is hopelessly unprofitable. This bitter lesson was taught by the brilliant German chemist Fritz Haber in the 1920s.
If humanity suddenly needs large reserves of gold and other rare minerals, it will be much more efficient to start mining on asteroids.
For example, the total cost of all the minerals that can be extracted from the asteroid Psyche, which is located in the asteroid belt between Mars and Jupiter, was estimated by experts at 700 quintillion dollars! If all these resources are handed over to the Earth and put into circulation, then this will immediately lead to the collapse of the world economy.