Gold and silver have served humanity for thousands of years, first as currency and decoration, and now increasingly as critical industrial materials. Gold’s primary uses today are jewelry (about 31% of global demand), investment bars and coins (27%), central bank reserves (17%), and technology (6%). Silver’s demand profile has shifted dramatically toward industry, with solar energy, electronics, and chemical manufacturing now consuming the majority of the world’s annual supply.
Currency and the Money Standard
For most of recorded history, gold and silver were money. The United States operated on a bimetallic standard from its founding, minting coins in both metals at a fixed ratio of 15 ounces of silver to one ounce of gold. That ratio held steady for 40 years before the Coinage Act of 1834 adjusted it to 16-to-1 in favor of gold. As the California Gold Rush flooded the market with domestic gold and silver exports grew, gold gradually became the dominant currency metal.
Silver was officially demonetized by the Coinage Act of 1873, marking the beginning of a true gold standard. Gold held that role until 1971, when the U.S. abandoned it entirely. Along the way, the Great Depression forced the government to prohibit private gold ownership in 1934 to prevent hoarding and stabilize the banking system. Today neither metal backs any major currency, but central banks still purchased 863 tonnes of gold in 2025 alone, treating it as a reserve asset and hedge against economic instability.
Jewelry and Ornamentation
Jewelry remains the single largest category of gold demand. In 2025, according to the World Gold Council, global jewelry consumption reached about 1,542 tonnes. Gold’s appeal in jewelry comes from its natural resistance to tarnish, its warm color, and how easily it can be shaped into intricate designs. Silver serves a similar decorative role at a lower price point, used in rings, necklaces, and flatware for centuries.
Gold in Electronics and Aerospace
Gold is the preferred metal wherever electronic connections need to stay reliable over long periods. Its immunity to corrosion means that gold-plated contacts and connectors maintain stable electrical performance indefinitely, which is why they’re the single most important use of gold in electronics. In circuits where voltages are small, wiring is complex, or failure isn’t an option, gold is the go-to material. When two gold surfaces touch, the resulting connection offers exceptionally low and stable electrical resistance. The technology sector consumed about 323 tonnes of gold in 2025.
In aerospace, gold plays a specialized but critical role. Satellite components use vapor-deposited gold tape and gold coatings because the metal reflects infrared radiation while allowing visible light through. This protects sensitive instruments from ultraviolet light and X-rays in space. Astronaut helmet visors carry a thin gold layer for the same reason, shielding eyes from unfiltered sunlight. Gold also serves as a long-lasting electrical contact in onboard satellite electronics, where repair isn’t possible.
Silver as an Industrial Workhorse
Silver has the highest electrical conductivity of any metal. On a scale where silver scores 100, copper comes in at 97 and gold at 76. It’s also an outstanding thermal conductor. These properties make silver indispensable in electronics, electrical contacts, and switches.
One of silver’s most consequential modern uses is in solar panels. The photovoltaic sector accounted for roughly 16 to 19 percent of total global silver demand in 2023, and that share is climbing fast. Projections suggest solar could consume 10,000 to 14,000 tonnes of silver per year by 2030, representing 29 to 41 percent of total supply. Silver paste forms the conductive pathways on solar cells that collect and carry electrical current, and no substitute matches its efficiency.
Silver is also the only effective catalyst for producing ethylene oxide, a chemical building block used to make antifreeze, polyester, detergents, and dozens of other products. Other metals cause the ethylene to burn completely rather than converting it to the desired product. Modern silver-based catalysts achieve about 90% selectivity for ethylene oxide, meaning very little raw material goes to waste.
Silver in Medicine
While metallic silver has no medicinal activity on its own, silver ions are toxic to bacteria, viruses, yeast, and fungi. They work by binding to DNA, RNA, and proteins inside microbial cells, which disrupts cell membranes, shuts down energy production, and ultimately kills the organism. This broad-spectrum antimicrobial action has made silver a mainstay in wound care for decades.
Silver sulfadiazine cream has long been a standard treatment for burns. More recently, manufacturers have developed dressings embedded with nanocrystalline silver that release ions into wounds slowly over time. These include silver-coated foams, silicone meshes, and cellulose fibers designed for different wound types. The sustained release helps prevent infection without requiring frequent dressing changes.
Gold in Medicine
Gold compounds have been used medically since the 18th century for conditions including tuberculosis and bacterial infections. Their most notable medical application came in treating rheumatoid arthritis. Injectable gold salts were first used for this purpose in 1927, and by 1935 one physician had treated more than 550 arthritis patients with beneficial results. Though newer drugs have largely replaced gold injections, they represented one of the earliest effective treatments for the disease. Gold alloys also remain valued in dentistry for crowns and bridges because of their durability and compatibility with human tissue.
Silver in Photography
Before digital cameras, photography was one of the world’s largest consumers of silver. The entire process depended on silver halide crystals embedded in photographic film and paper. When light strikes these crystals, it triggers a chemical change that forms a latent image. During development, the exposed crystals convert to metallic silver, producing the dark areas of a photograph. This wasn’t a minor side feature of the chemistry. The silver halides themselves absorbed the light and drove the reaction, making silver the essential ingredient in every photograph taken from the 1830s through the early 2000s. Digital photography has dramatically reduced this demand, but silver halides are still used in specialty film, medical X-rays, and certain industrial imaging applications.
Investment and Wealth Storage
Both metals have served as stores of value for millennia, and that function is alive today. Gold investment demand (bars, coins, and exchange-traded funds combined) totaled roughly 2,175 tonnes in 2025, making it the largest demand category after jewelry. Silver bullion serves a similar purpose at a more accessible price point, though silver’s growing industrial consumption means its market behaves differently from gold’s. Gold tends to rise during economic uncertainty, which is why central banks, sovereign wealth funds, and individual investors continue to hold it as a financial safety net.