http://www.france24.com/en/20120919-popigai-russias-vast-untouched-diamond-crater
A once secret and long neglected Siberian area...the Popigai Crater...may hold trillions of industrial diamonds...that could disrupt the world's market.
The 100 km/60 mile impact zone left by a huge asteroid 35 million ears ago...is actually covered by a mantel of super-compressed diamonds.