In pre-industrial era silver was used to make coins, decorations, jewelry and mirrors.
In heraldry the silver colour is shown as white.
In modern times silver is still used for decorations, but also in many technology processes. Being the best known conductive material it is used in electronics. Other applications include photography, biology and medicine (as antibiotics).
Questions regarding to mining of silver, its transportation (eg. the Silver Fleet), use or human greed for this metal, are valid. Questions regarding decorations made of silver should be tagged with silver-hallmark instead.