How are diamonds made under ground?

Answer 1

The formation of natural diamond requires very specific conditions. Diamond formation requires exposure of carbon-bearing materials to high pressure, ranging approximately between 45 and 60 kilobars, but at a comparatively low temperature range between approximately 1652-2372 °F (900-1300 °C). These conditions are known to be met in two places on Earth; in the lithospheric mantle below relatively stable continental plates, and at the site of a meteorite strike.

Answer 2

Diamonds form about 100 miles (161 km) below the Earth's surface, in the molten rock of the Earth's mantle, which provides the right amounts of pressure and heat to transform carbon into diamond. In order for a diamond to be created, carbon must be placed under at least 435,113 pounds per square inch (psi or 30 kilobars) of pressure at a temperature of at least 752 degrees Fahrenheit (400 Celsius).

Answer 3

The diamonds are made by the immense pressure of the Earth. The deeper you go, the more pressure, and the more diamonds you will find. If you want to make them bigger, just leave them under for a period of time

Answer 4

Diamonds are essentially compressed carbon but the method of mining and selecting the best quality is what makes them precious. When the carbon is at a very high temperature and under very high pressure, the bonds are formed. Natural diamonds are made 180km below the earth’s surface. The raw material extracted from the ground is then transported to a special screening plant for further processing. There's another form of alluvial mining called artisanal mining. The temperatures at this depth are between 1100o c and 1400o c. The diamonds are then cleaned up, cut and polished.