Russia is about to start tapping into a huge source of diamonds that could supply the world market for the next 3,000 years.
Scientists estimate there are 'trillions of carats' lying beneath a 35million-year-old asteroid crater in Siberia - more than ten times the global stockpile.
The Kremlin has known about the reserves under the 62-mile-wide impact zone since the 1970s.
But it has kept it a secret until now because it was already reaping big profits in what back then was a heavily controlled market.
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