The two main devices (symbols) in the Buckminster blazon are the lion rampant and billet. 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 1A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Sable. 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 2Boutell’s Heraldry, J.P. Brooke-Little, Warne, (revised Edition) London 1970, P 26. Although it may seem a sombre tone, and does indeed sometimes denote grief, it is more commonly said to represent Constancy 3The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P35.
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) 4Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P53. In a sketch or drawing it is represented by plain, unmarked paper 5A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1847, P11.
There can be no animal more clearly associated with Heraldry than the lion, majestic King of the Beasts. Originally it appeared only in one pose, erect, on one paw, with the others raised 6Boutell’s Heraldry, J.P. Brooke-Little, Warne, (revised Edition) London 1970, P 64 but such was the popularity of this figure, and the need to distinguish arms from each other, that it soon came to be shown in an enormous range of forms 7Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P136-141. The lion rampant is an example of these modified form, and any family would be proud to have such a noble creature displayed on their arms. Rampant is the default attitude of the lion, raised on its hind legs, facing to the dexter and with front paws extended in a fearsome and powerful pose.
For easy recognition of the items on a coat of arms, and hence the quick identification of the owner, bold simple shapes are best. Hence, simple geometric shapes are often used for this purpose 8A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P146xz`, and the billet is a typical example of this, and can appear in any of the main heraldic tinctures. In form it is a simple rectangle though sometimes has a slightly rounded or ragged appearance to reflect one possible origin as a block of wood cut by an axe. 9A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Billet. Wade groups the billet with the other square charges as symbols of “honesty and constancy”. 10The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P95