How Diamonds are formed

There is a lot of carbon which is the only element that makes up diamonds in the upper mantle of a volcano because of the rock that melts there. Huge and specific amounts of heat, chemistry and pressure make the carbon atoms melt but when the tempature decreases they crystallise forming diamonds. It takes thousands of years for the mantle to cirrulate to the surface of the earth, some geologic events (earthquakes, volcanoes, etc.) also force the rocks to the surface in a number of ways, such as alluvial deposits (in riverbeds) or kimberlite pipes (primary diamond mines) they then can be minded as rough diamonds.





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