Even if you are not a gold investor, I believe that you already know that the price of gold, just like any other commodities in the market, is driven by supply and demand. However, unlike most other commodities, gold prices are usually rather stable comparing to other forms of investment and that is one of the reasons why trading gold coins remains popular even at the times of economic crisis.
Also, it is an interesting fact that the gold price is mainly influenced by changes in sentiment rather than its annual production. The demand of gold rises in times of national crisis such as war, stock market declines, currency outcry or inflation etc since people have and would always see gold as the one and only asset they could own without the possibility of losing value unlike other types of investment such as bonds.