Uses of gold include the creation of coins, bullion and jewelry. It is also used in electronics components such as connectors, soldered joints, connecting wires, relay contacts, cellphones, calculators, personal digital assistants and connection strips. In addition, gold is used in the making of computer components.
Gold is one of the most useful minerals on earth, because it is a good conductor of electricity, is easy to work with, resists tarnish well and can easily be drawn into wire or hammered into thin sheets. Gold also forms alloys with various other metals. It can be melted and cast into many shapes and has an appealing color and luster. Gold has been used to make ornamental objects and jewelry for many years, because of its resistance to tarnishing. However, pure gold is too soft to stand up the stresses to which jewelry is often subjected.
Gold is used as a medium of exchange or money, primarily due its high value and scarcity. It is used in electronics because it is an efficient conductor of electricity. Electronic devices made from gold are highly reliable. Gold is used in dentistry because it is nonallergenic and easy for dentists to manipulate. It is also used as a drug to treat a few medical conditions. For instance, particles of a radioactive gold isotope are implanted in tissues to act as a radiation source in treating certain cancers.