Analyze the relationship between 'Gemfields' and 'Mining' within the context of the input sentence.
Options: industry, product/material produced, creator, owner of

Mon, Sep 14, 2015, 16:46 BST - UK Markets closed Is Now The Perfect Time To Buy Gemfields PLC, Rare Earth Minerals PLC And Hochschild Mining Plc By Peter Stephens | Fool.co.uk – 35 minutes ago 1.041 -0.0240
industry