The main device (symbol) in the Dab blazon is the acorn. The three main tinctures (colors) are sable, or and gules .
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.
The bright yellow colour frequently found in coats of arms is known to heralds as Or, or sometimes simply as Gold.4. 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 5. The yellow colour is often associated with the Sun, and the zodiacal sign of Leo.6.
Red in heraldry is given the name Gules, sometimes said to be the “martyr’s colour”7. The colour is also associated with Mars, the red planet, and the zodiacal sign Aries 8. Later heralds of a more poetical nature would sometimes refer to the colour as ruby, after the precious stone.9.
Amongst the natural objects depicted on a coat of arms, trees feature frequently, either in whole or as individual branches and leaves or fruit. 10. The acorn, often represented in its early state as vert (green) 11 can be associated of course with the mighty oak, signifying, according to Wade, “antiquity and strength”, for obvious reasons.