In the past, gold is used as the main tool of barter or for exchange of goods. It is most commonly known as a chemical element encountered in Chemistry subjects having the symbol of AU and atomic number of 79. And of course, gold is more popularly known as composition if jewelries. But other than this, do you know that gold is used as a standard for monetary and goods exchange? This comes in various forms like coins, ingots, bars and bullions. It is said that gold can protect one’s wealth and preserve one’s purchasing power. This is possible by considering to buy gold coins from trusted gold investment company such as the US Gold Bureau. It is one of the best dealers in America that offers a convenient market and very competitive precious metals prices.