Argent

The name derives from Latin argentum, translated as "silver" or "white metal". The word argent had the same meaning in Old French blazon, whence it passed into the English language.

In some historical depictions of coats of arms, a kind of silver leaf was applied to those parts of the device that were argent. Over time, the silver content of these depictions has tarnished and darkened. As a result, it can sometimes be difficult to distinguish regions that were intended as "argent" from those that were "sable". This leaves a false impression that the rule of tincture has been violated in cases where, when applied next to a dark colour, argent now appears to be sable due to tarnish.

Argent versus white

Arthur Charles Fox-Davies argued in his book The Art of Heraldry that, though extremely rare, the colour white existed as an independent tincture in heraldry separate from argent. He bases this in part on the "white labels" used to differentiate the arms of members of the British royal family. However, it has been argued that these could be regarded as "white labels proper", thus rendering white not a heraldic tincture.