A collection of jewelry or coins can represent a great investment over time but collecting is something that takes a bit of time and isn't something to be entered into blindly. Gold coins can often represent not only significant purchases but may be and become extremely valuable during their time spent in someone's collection. It's important to note that not all new coins that are sold in the marketplace today are particularly valuable since they aren't and have never been considered actual usable currency. Coin collectors often must be wary of obtaining coins that are simply created for display.