Caveat emptor! Mining stocks are cheap, with gold, platinum and copper at multiyear lows, but if you plan on buying them at these prices, read this first. So far this year, futures prices for gold GCQ5, +0.72% have lost more than 7%, platinum PLV5, +0.18% has plunged at least 18% and copper HGU5, -1.49% is down more than 16%, while key indexes for the mining stocks, including the Philadelphia Gold and Silver Index XAU, -3.83% have tanked by 30%. That makes stocks “cheap” — at least relative to the declines in metals prices. Read: Gold is tanking, but miners are really getting rocked And just last week, mining giant ... (full story)