Silver is the most reflective element, reflecting 95% of the visible light spectrum. Unless you use it in ultraviolet light, which makes it about as reflective as a stone. It is most effective immediately after placement. Along with gold, silver is the most ductile (malleable) metal. An ounce of silver can be made into a wire 8,000 feet long. Most of the world’s silver is now found in Mexico and Peru. Other countries with large quantities of silver include the US, Canada, Russia and Australia. Most of it is found as a by-product of copper, lead and zinc mining. Silver is the best electric conductor of the elements; all other elements are measured against it. It is the only element that scores 100% conductivity, with the next closest element being copper at 97%.  Silver is also the best thermal conductor of any metal but has the lowest contact resistance.