Most people who decide to make investments think primarily of stocks, bonds and similar types of securities. Many would like to buy gold bars, but are unsure of where to start. Others may wonder whether they\'re worthwhile, or why they\'re of any importance, since most people aren\'t accustomed to trading in metals. These bars are made of pure gold, and always have the purity and weight stamped on them. Each also has its own registration number for identification and authentication purposes.