Diamonds were formed more than 300 million. Years ago. Kimberlite magma formed at a depth of 20-25 km. Magma gradually rose along faults in the earth's crust, and when the upper layers could no longer contain the pressure of the rock, there is an explosion. The first such handset found in South Africa in Kimberley - from there came the name. In the mid 50-ies of the richest indigenous diamond deposits were discovered in Yakutia, where about 1,500 kimberlite pipes have been discovered to date. The development of deposits of Yakutia is a Russian company "ALROSA", which produces 99% of the diamonds in the Russian Federation and more than a quarter of the world.