2017 global natural diamond production forecasted at 142M carats worth $15.6B

While it may not be a major challenge for mid-tier miners with established operations, it would be "prohibitive" for smaller players, analysts say.

UK media suggested this weekend that Glencore had quietly built a 10% stake in OZ and was considering a bid.

In Great Britain, often one person owns the surface and another owns what's underneath.

Aerial view of Peru's rainforest destruction.

Hundreds also march in London.

Tin and tantalum come from 'conflict-free' sources in the Democratic Republic of Congo.

Says it might start charging member banks more or even dissolving the Gold Forward Offered Rates (GOFO).

One company is selling 24K gold cigarette rolling papers.

100 tonnes of silver from three miles deep.