Very cool descriptions of all the gold in the world here.
The best estimate at the end of 2011 is that around 165,000 metric tons (or tonnes) have been mined in all of human history. That’s about 181,881 ordinary tones . . . or 5,820,203,717 ordinary ounces . . . .
3.42 Olympic-sized swimming pools could contain all the gold . . . Another way to imagine this is to think of all the gold in the world ever mined as a single cube. That would be a cube with each side just over 20 meters, or 67 feet in length. . . .
[The] annual production of gold would fit in a cube whose sides were 5 meters.