Wikipedia
ALROSA – is the Russian group of diamond mining companies, which has the leading role in the world diamond mining by volume. ALROSA is engaged in the exploration, mining, manufacture and sale of diamonds. Mining takes place in Western Yakutia, Russia, the Arkhangelsk region, Russia and Africa. The Russian Federation is the largest diamond-producing nation in the world. ALROSA is the leading company accounting for 95% of country's production and 28% of the global diamond extraction. ALROSA has the world’s largest rough diamond reserves, sufficient for at least another 18–20 years of production.
Full title – Public joint stock company ALROSA, short – PJSC ALROSA. The company's headquarters are in Mirny ( Sakha Republic) and Moscow.
CJSC "Air Company ALROSA" , formerly Alrosa Mirny Air Enterprise (Alrosa Air Company Limited) is an airline from Mirny, Russia. Its bases are at Mirny Airport and Polyarny Airport, with a focus city at Lensk Airport. The airline operates scheduled and chartered domestic flights.