Here is a quick and simplified version of when to buy commodities:

A good time is when there is some type of a crisis going on because the price will increase greatly. In other words, if the economy starts to drop people get nervous and start buying the world's oldest currency -- gold. If you know that a few hurricanes, depressions, or plagues are going to hit some of the more developed countries then you know gold is bound to rise. Usually silver has a tendency to move with gold. To reiterate, gold/silver tends to move in "uncertain" times in our economies.

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