The three main devices (symbols) in the Ardagh blazon are the mullet, martlet and demi lion. The three main tinctures (colors) are argent, sable and or .
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) 1. In a sketch or drawing it is represented by plain, unmarked paper 2.
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 3. 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 4. Although it may seem a sombre tone, and does indeed sometimes denote grief, it is more commonly said to represent Constancy 5.
The bright yellow colour frequently found in coats of arms is known to heralds as Or, or sometimes simply as Gold.6. Along with, argent, or silver it forms the two “metals” of heraldry – one of the guidelines of heraldic design is that silver objects should not be placed upon gold fields and vice versa 7. The yellow colour is often associated with the Sun, and the zodiacal sign of Leo.8.
The heraldic mullet, not to be confused with the fish of that name, is shown as a regular, five pointed star. This was originally, not an astronomical object, but represented the spur on a horseman’s boot, especially when peirced, with a small circular hole in the centre it represents a type of spur known as a “rowel” 9. A clear example can be found in the arms of Harpendene, argent, a mullet pierced gules. The ancient writer Guillim associated such spurs in gold as belonging to the Knight, and the silver to their esquires 10. In later years, Wade linked this five pointed star with the true celestial object, the estoile and termed it a “falling star”, symbolising a “divine quality bestowed from above” 11.
The martlett is by far the most common bird to appear in British Heraldry, perhaps only equalled by the eagle, however it is not a species ever to be found in an ornithologists handbook! The word itself is though to have come from the French word merlette, the female blackbird and itself a similar type of charge used in French Heraldry. 12. Over time the image has become quite stylised, without visible legs or distinctive feathers. Wade suggests that this representation arises from “the appearance of the bird of paradise to ancient travellers” 13. Other bird species may be named in coats of arms (cornish chough is a frequent example) but in actual execution their appearance is often indistinguishable from the martlet.
The demi-lion is a variant of the typical creature shown only from the waist upward. It can take all same poses and attitudes of its fully represented brethren and often appears to be emerging from some other device such as a fess or chief. 14 No special significance should be given to the demi appearance and it should be taken to have the same meanings and interpretations as the noble king of beasts itself.