Russian miner said the price decline for rough diamonds was due to the changed sales assortment resulting from an increased demand for small-sized rough rocks from India.
The Russian Federal Anti-Monopoly Service is investigating forthcoming sale of natural gas assets by producer Alrosa after a complaint from would-be buyer.
The mining cycle turned two years ago – gains for the sector's largest companies have far outpaced stocks like Apple, Amazon, Google and Facebook since.