The stock exchange is a very volatile emotion-driven place. Even though most of the time one can predict future moves in particular assets with decent effectiveness every once in a while abrupt and unexpected market moves take place. And we have just seen such violent and heavy declines in precious metals mining stocks.   Sadly no one is able to foresee the future with 100% certainty and this is why diversification is such a crucial concept in investing. It would have certainly protected gold and silver investors' profits or at least diminished their losses had they invested not only ...