I've never considered gold, silver, real estate to be any kind of investment.
The potential profit (if markets are good) is always less than what you could have build with that money (hire people, invest in traffic, improve your product).
But what doesn't work for me, work for many. If you are not risktaker, these are good ways to put your money into such stable assets with high liquidity.
Depends also on how much effort did you have to put to get those savings - that really change the way you invest.
If you've got your savings by shopping cheap and busting your ass 10+ hours a day for couple of years, you are unlikely to put it all on one risky card.