Throughout history, silver bullion has served mankind as a primary monetary metal.
Also however silver is most commonly used today as an industrial commodity. Industrial demand for silver has grown consistently for the past three decades because of silver's many unique properties, including its strength, malleability, and its unparalleled electrical and thermal conductivity.

With silver being cheap compared to the price of gold it attracts a lot of people who are speculating that the price will go up. These days, this isn't too much of a pipe dream because of the booming economies of India and China. These economies will demand more and more precious minerals thus boosting the price of silver bullion.