Furs
In the earliest period, there were only two furs, ermine and vair. Ermine represents the fur of the stoat, a type of weasel, in its white winter coat, when it is called an ermine. Vair represents the winter coat of the red squirrel, which is blue-grey above and white below. These furs were commonly used to line the cloaks and robes of the nobility. Both ermine and vair give the appearance of being a combination of metal and colour, but in heraldic convention they are considered a separate class of tincture that is neither metal nor colour.
Ermine (Fr. hermine, Ger. hermelin) is normally depicted as a white field powdered with black spots, known as “ermine spots”, representing the ermine’s black tail. The use of white instead of silver is normal, even when silver is available, since this is how the fur naturally appears; but occasionally silver is used to depict ermine.[19] There is considerable variation in the shape of ermine spots; in the oldest depictions, they were drawn realistically, as long, tapering points; in modern times they are typically drawn as arrowheads, usually topped by three small dots.