The two main devices (symbols) in the Gardinis blazon are the label and bar. The two main tinctures (colors) are sable and argent.
Sable, the deep black so often found in Heraldry is believed to named from an animal of the marten family know in the middle ages as a Sabellinœ and noted for its very black fur 1. In engravings, when colors cannot be shown it is represented as closely spaced horizontal and vertical lines, and appropriately is thus the darkest form of hatching, as this method is known 2. Although it may seem a sombre tone, and does indeed sometimes denote grief, it is more commonly said to represent Constancy 3.
Argent is the heraldic metal Silver and is usually shown as very pure white. It is also known more poetically as pearl, moon (or luna) 4. In a sketch or drawing it is represented by plain, unmarked paper 5.
The label holds a special place in heraldry, originlly being a temporary mark, used by the oldest son while his father was still alive. In appearance it is a horizontal bar near the top of the shield from which descend 3 or 5 “points” or small rectangles descending from the bar. 6 In more recent use it has come to used as charge in its own right 7 and may have additional charges on each point, which can create a pleasing visual effect.
The bar is a thin, horizontal stripe across the centre of the shield 8, usually in groups of two or three (any more and there would be confusion with barry, a treatment of horizontal lines of alternating colours). Bars can be a distinctive and easily recognised device, early examples include those awarded by Henry III of England to the family MAUDYT Argent, two bars gules.