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.
Gold from Clogau St David’s mine in North Wales is behind the wedding bands of the Queen Mother, the Queen, Princess Margaret, the Princess Royal and Diana, Princess of Wales.