Notes Achromic means Having no color or something that is colorless. Calico means multi colored or spotted. Glassy is shiny, normally polished, in appearance. Vitreous also refers to a glassy appearance. Enamel is a glassy transparent coating over metals or ceramics giving the objects a shiny and polished appearance.
Silver is metallic in nature and has reflective properties.
It can be polished until it appears almost white, to some degree, but it is not a color of the rainbow spectrum. Silver was used on the backs of clear glass to create mirrors. Because of the glass and the silver's ability to be highly polished, it would reflect images. Argent is silver or something resembling it. Argentite is a valuable silver ore, with a lustrous, lead gray color.