Native silver has the highest electrical conductivity of any naturally occurring metal. Its atoms allow electrons to move through the metallic structure with unusually little resistance, which is why refined silver is used in high-performance electrical contacts, conductors, and specialized electronics.
In geology, native silver means silver occurring as the elemental metal rather than locked inside a compound. It commonly forms with sulfide minerals in hydrothermal veins and may appear as wires, sheets, grains, or branching masses. Silver is also recovered as a by-product from ores of lead, copper, zinc, and gold.
Copper is used more widely for ordinary wiring because it is much less expensive, while gold resists corrosion particularly well. Graphite conducts electricity too, but it is a carbon mineral, not a native metal. Conductivity can vary with impurities and temperature, but silver remains the standard natural-metal answer.