An ancient lava reservoir and a treasure trove of diamonds have been found lurking more than 250 miles (410km) below Earth's surface in the mantle. The so-called 'lava reservoirs' are thought to be as ...
DIAMONDS "unlike any other" are being blasted to Earth's surface out of volcanoes. The precious gems, known as "superdeep diamonds", are stored at least 250 miles below our planet's crust above ...
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