Aurubis maintains full-year earnings forecast

The three-billion-year-old diamond the size of a tennis ball was found by Canada's Lucara Diamond last year.

The country is said to be sitting on mineral deposits worth hundreds of billions of dollars which, once developed, could surpass oil as its main source of income.

The company aims to replant forests along old access roads and seismic lines in an area covering 3,900 square kilometres — more than 10 times what it accomplished through its early-stage work.

First time a country partners with privates to boost the development of the industry.

Large mining companies are selling off some of their prized assets after the prolonged global commodities markets rout left some with high levels of debt.

Price tag makes it the most expensive fancy intense blue diamond ever sold at auction.

Eight executives will also face charges, although the police did not disclose their names.

A federal judge has ruled in favour of the firm in lawsuit over alleged pollution at the company's massive Bingham Canyon copper mine.

Zhongjin Gold Corp., Shandong Gold Mining Co. and Zijin Mining Group Co. said to be among potential bidders.