Udachnaya open-pit mine (Udachnaya-Vostochnaya pipe; Udachnaya pipe), Daldyn, Daldyn-Alakit kimberlite field, Sakha Republic (Yakutia), Russia

Discovered in 1955. As of 2010, Udachnaya pipe is controlled by Russian diamond company Alrosa, which planned to halt open-pit mining in favour of underground mining in 2010.

Gemstone List


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