Gold is considered one of the most precious metals that can be found, and there is only so much of this bullion that can be recovered every year. The reserves that are accessed were caused by meteorite strikes and are not the result of the earth forming. During the early stages all of this ore sank to the center of the planet because it is so heavy and dense, and these amounts can not be recovered with the technology that is available today.
Since this material is only available in a specific amount will there be a shortage soon? While this is possible it is very unlikely for many reasons, and few expect that a severe shortage will happen because of the amount that is current available.
Some doubt that the economy is recovering, and they point to record gold demand and high prices to prove their point. This has caused more individuals to view this vehicle as an excellent choice, and the higher demand has helped to push the market value extremely high right now. That could change very quickly though, and historic data shows that current numbers are not typical.
The economy plays a big part in how attractive this sector is viewed, and right now a lack of activity and a recession that does not seem to be ending have caused upward pressure. It is unlikely that the mineral will ever be scarce, but it could see a surge in market value because of the current conditions.
There are sufficient reserves available right now to ensure that there is enough of this precious metal for the near future. If the demand continues to grow at the current pace this may not always be true though, and at some the demand will exceed the supply by a large amount. When this happens then only the very wealthy may be able to afford this commodity.