Cache Deep in Earth’s Interior
Study finds 1–2 percent of Earth’s oldest mantle rocks are made from diamond
By Jennifer Chu | MIT News Office
July 16, 2018 -- There may be more than a quadrillion tons of diamond hidden in the Earth’s interior, according to a new study from MIT and other universities. But the new results are unlikely to set off a diamond rush. The scientists estimate the precious minerals are buried more than 100 miles below the surface, far deeper than any drilling expedition has ever reached.