Similar to peak oil, peak gold is defined as the time when maximum gold extraction occurred from the height of worldwide gold production. The total amount of gold in the world is estimated to be 242,000 tonnes by the United States Geological Survey. A tonne is one metric ton. Based on this USGS 2006 survey about 152,000 tonnes of gold have been mined since the beginning of man’s prize for the yellow metal. The halfway point of gold extraction, the top of the curve for all gold reserves in the world that has been extracted, would be 121,000 tonnes believed to have been extracted by the year 1993. If these estimations are correct, less than 90,000 tonnes remain in the world. Gold experts have backtracked when peak gold would have taken place, measuring the amount of total gold, at the height of production. These estimates conclude peak gold occurred sometime in the years 2000-01.
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