Copper has been a valuable metal for thousands of years and has many practical applications today. What makes copper so versatile is its malleability and its ability to conduct heat and electricity. Because of these characteristics, copper can be found in home plumbing and electric appliances. Within the last couple of decades, copper consumption on a global scale has increased dramatically.
Unlike gold, silver plays a major role in industrial manufacturing. Because of its superior electrical conductivity and relatively cheap price (compared to gold), silver is in high demand on the electronic front of technology. Silver can be used for batteries, brazing and soldering, bearings,and high-end electronics.
In recent years, the demand for silver in the solar power industry has increased significantly due to the rise in fossil fuel prices.