There is a history to copper in human civilization as rich as that of gold and silver. While the latter two have long been used to store and protect wealth, copper served countless purposes. Ancient civilizations used copper for everything from weaponry to plates and utensils. Today, copper is used in two major components of everyday life. The high conductivity of copper made it excellent for use in electrical wiring in homes, and was so commonly used and in such high demand that robbers began stealing copper piping and tubing from abandoned homes in the 21st century. It is also used for water piping due to its resistance to corrosion. These 10 oz Copper Bullion Cubes contain a total of 10 ounces of pure copper, and make an excellent option for those looking alternatives to copper rounds and bars. Each one has a design on the top face of the cube that has been engraved with the full square and information from Coppers place on the Periodic Table of Elements. Included in the design is the atomic number of copper, 29, along with its standard atomic weight of 63.546, and its listing of Cu from the table. Other markings include the weight in ounces, the name Copper, and the melting point in Celsius of copper. Copper exists as a pure metal in the natural world. Its high conductivity and resistance to corrosion made it the perfect alloy in coins. Many modern circulation coins feature copper alloys because it allows the products to stand up to the tests of handling while in circulation.