Scientists estimate there are a quadrillion tons of diamond below Earth's surface

The Earth contains a vast amount of diamonds, estimated to be a quadrillion tons, located over 100 miles beneath the surface under continental tectonic plates. Studies suggest that 1 to 2% of cratonic roots may contain diamonds. Researchers used virtual rock models to determine that diamonds allow sound waves to travel quickly through these roots.

How deep are the diamonds estimated to be beneath the Earth's surface?

• 50 miles

• 100 miles

• 200 miles

• 150 miles

What percentage of the cratonic roots is believed to be filled with diamonds?

• 0.5 to 1%

• 1 to 2%

• 2 to 3%

• 3 to 4%

Which geological feature is associated with the location of these diamonds?

• Oceanic ridges

• Mountain ranges

• Cratonic roots

• Volcanic arcs

What method did researchers use to study the material properties of cratonic roots?

• Field experiments

• Laboratory tests

• Virtual rock models

• Satellite imaging

What was the result of the virtual rock model tests regarding sound wave travel?

• Quartz

• Diamonds

• Basalt

• Granite