"Severalmaz" ("North Diamond") is located in the Archangelsk region. Its operator, "Alrosa", is the largest diamond mining company in Russia.
Way to the richest Lomonosov deposit
Diamonds were found in the Archangelsk region in 1980, the Lomonosov deposit turned out to be the largest in Europe. For 2012 its resources are 220 million carats (1 carat-0,2g), their cost is 12 billion dollars.
The depth of the open pit is 100 m but in order to get out of it one has to overcome some kilometres along the narrow serpentine road. It demands a lot of fuel so malefactors often make attempts to get hold of the diesel fuel.
Excavators and trucks daily take thousands of tons of ore out from the pit. One million of tons has approximately 100 kg of diamonds.