Lets think about Investing in Silver like you would for a company.
I am willing to invest in a company if:
1) I know that it won't go bye-bye during the next 10 years
2) My purchase price is at least 50% from the top. And buy at major monthly supports.
3) Also, if the company fundamentals continue to be good and yet share price falls 50% I will further buy.
In that respect, I know for sure, Infosys can go belly up but silver won't. All time high is $50. 150% room. First purchase at $20, which is a strong support. A safe bet. Next purchase, at $10, also a very strong support.
On the brighter side, it is likely that the precious metals re-gain mad demand due to instability in the world. Currently, it is the reverse cuz a couple of EU govs have sold to raise cash. But, it is very likely to recover. Even if it doesn't then holding it for dear life is not that bad a choice for diversification.