By Anthony Watts – Re-Blogged From WUWT
Sound waves reveal diamond cache deep in Earth’s interior
Study finds 1–2 percent of Earth’s oldest mantle rocks are made from diamond.
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.