Utilize the input text as a context reference, choose the right relationship between Gemfields and Mining from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

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

Answer: industry