At one time, silver was used as currency in the United States. The advent of paper money and the elimination of silver in coin currency have changed that. Silver, however, remains a valuable precious metal that is traded all over the world. As such, investing in silver remains a viable option for many. There are a number of ways to invest in silver. One could purchase silver coins and resell them as the coins' value appreciates. One could also invest in publicly traded companies that are involved in silver mining. Of course, the most common method of investing in silver is found in the options and commodities market. There are a multitude of different option trades that can be used in silver investing. The most common options would be a call option and a put option.