Lomonosov diamond mine
Mezensky District, Russia
The Lomonosov mine is one of the largest diamond mines in Russia and in the world. The mine is located in the north-western part of the country in the Arkhangelsk Oblast. The mine has estimated reserves of 220 million carats of diamonds and an annual production capacity of 2 million carats.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).