As one can see here ( How fast does the available amount of gold in the world increase due to mining? ), available amount of gold is increasing. That sounds similar to printing more money. I ...
With stocks in a company, when you do valuations, you can look at things like how much profit the company has made, or how much dividends it gives back, in order to get values with Price Earning ...
I think the price history graphs of speculative investments such as housing and gold look like a series of linked "u"s, ie sharp peaks and rounded troughs, while the graphs of less speculative ...