Russian metals and mining firms reduce investment

Massive find is believed to be the fifth biggest gem-quality diamond ever found

Deal provides the diamond giant with access to a production base outside Russia.

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 rival companies have unearthed three diamonds larger than 100 carats each.

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.

Even though the system has received criticisms, its 54 participants seem committed to making it work.

Rapaport says that following a better-than-expected holiday season, polished diamond prices stabilized in December 2017.