Russian diamond miner Alrosa unearthed a 191-carat diamond on Christmas day at the Botuobinskaya kimberlite pipe in Yakutia. According to estimations made by Alrosa’s experts on site, the rough diamond is of high quality. They estimate the age of the stone at about 2 billion years. Further mineralogical analysis will reveal more precise numbers. "Surely, such findings are very remarkable," said Evgeny Agureev, Deputy CEO of Alrosa. The rough diamond will be sent to the United Selling Organization for a detailed evaluation.
Alrosa's Nyurba Mining and Processing Division was established on March 6, 2000. The division operates two deposits: the Nyurbinskaya and Botoubinskaya pipes. Geologists from the Botuobinskaya exploration expedition discovered the Botuobinskaya pipe in 1994, and mining at the deposit began in 2015. It is famous for a large proportion of gem-quality and near-gem-quality transparent crystals.