
Material Properties
Silver has valuable material properties as follows.Electrical Conductivity | Highest of any metallic element |
Thermal Conductivity | Highest of any metallic element |
Optical Reflectivity | Very high for most wavelengths of visible light. Less reflective than aluminum for violet and ultraviolet light. |
Reactivity | A noble metal that is resistant to corrosion and oxidation in moist air. |
Ductility & Malleability | Soft, ductile and malleable but less malleable than gold. |
Industrial Uses
Silver is an important industrial material that is used in solar panels, semiconductor devices, circuits, electrodes, capacitors, antennas and other electrical components. It also has specialized uses in mirrors, photographic equipment, medical instruments, medicine, filtration equipment and as a disinfectant agent.Decorative Items
Silver is used to produce jewelry, silverware and other high value decorative items. It has been used for these purposes since antiquity due to its lustrous appearance, high value and malleability.
Abundance
The abundance of silver in the Earth's crust is about 0.08 parts per million. This is more abundant than gold, platinum or palladium but far less than base metals such as tin or nickel.Native Metal
Deposits of pure silver as a native metal are far more rare than gold. As such, most silver is produced as a byproduct of the refining of other metals such as copper, gold, lead and zinc.Luster
Silver is extremely reflective such that it is unusually lustrous when polished. The characteristic white metallic shine of silver is a well known color name such that other white metals such as aluminum are perceived as being a silver color.Metal of Antiquity
Silver is one of the seven metals of antiquity alongside gold, copper, tin, lead, iron, and mercury. These were the only known metals before the 13th century when arsenic was discovered. This can be compared to the 86 metals known today. It is unknown how or when silver was discovered. In Ancient Egypt, silver was more expensive than gold until around the fifteenth century BC because its native form is more rare.Currency
The earliest known coins produced by the Kingdom of Lydia in Asia Minor around 600 BC were made of electrum, an alloy of gold and silver. This appeared to set a precedent that has survived to this day as gold and silver coinage are a common feature of history. For example, the Ancient Greeks, Roman Empire and to a lesser extent the Byzantine Empire produced massive quantities of silver coins. Coins containing silver continued to be used throughout the middle ages and modern-era as an active currency. For example, circulated US quarters were a 90-percent silver alloy until 1965. Silver coins are still produced today by many nations and often serve as collectables or investments as opposed to a circulated currency.
Bullion
Silver is produced in standardized high purity bars, ingots and specialized coins that are used as a store of wealth and emergency currency. These are packaged into investment products that can be used to invest in silver or speculate on its price. The other precious metals sold as bullion are gold, platinum and palladium.Food
Silver is poisonous but its pure metallic form is sometimes used in small quantities as a food coloring or decorative element based on the argument that it can't be digested. Again to be clear, many silver compounds are extremely poisonous. Nevertheless, silver is often used as a novelty or traditional food additive. For example, silver foil known as vark is used to decorate Asian desserts such as the Indian dessert kaju katli. Silver has no known purpose in the body.