The main device (symbol) in the Dandsey blazon is the bar nebulee. The three main tinctures (colors) are argent, or and gules .
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.
The bright yellow colour frequently found in coats of arms is known to heralds as Or, or sometimes simply as Gold.3. 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 4. The yellow colour is often associated with the Sun, and the zodiacal sign of Leo.5.
Red in heraldry is given the name Gules, sometimes said to be the “martyr’s colour”6. The colour is also associated with Mars, the red planet, and the zodiacal sign Aries 7. Later heralds of a more poetical nature would sometimes refer to the colour as ruby, after the precious stone.8.
The bar is a thin, horizontal stripe across the centre of the shield, usually in groups of two or three (any more and there would be confusion with barry, a treatment of horizontal lines of alternating colours). It is also possible to place decorative edges along bars, typically these are smaller than those found on the major ordinaries like the fess and pale, but have the same design and share the same meanings. Nebulee (sometimes nebuly is a very pleasing pattern of interlocking curves, the name refers to “clouds” as it is reminscent of their soft abstract edges.