The Popigai reserves are enough to keep the planet in diamonds for 3,000 years.
Massive Siberian source of diamonds formed by an asteroid 35 million years ago can 'overturn entire world gem market'.
When Vadim Kolpakov went on an expedition to the north of Irkutsk region, he had no inkling of the sensational discovery he was about to make.
An extraordinary adventure, blessed by the Queen of England and the Tsarina of Russia.
Reindeer herders find more craters in the far north in a deepening puzzle for scientists.
Monument to Kate Marsden unveiled in Sosnovka village 123 years after she set out on her epic work.