Silver
Silver is the whitest of all metals. This property, and its high reflectivity, was responsible for its Latin name argentum (white and shining), from which the chemical symbol for silver, Ag, is derived. Because it does not readily oxidize, silver can be found in the native state - in metallic form rather than as a compound - and can therefore be assumed to be one of the first metals discovered. It has been found in tombs dating from 4000 BC.