
Grammar of Heraldry: Tinctures and the Shield Surface
Armorial bearings rest upon a field divided into distinct areas and governed by strict rules of contrast. Metals comprise Or (gold) and Argent (silver), while the primary colours are Gules (red), Azure (blue), Sable (black), Vert (green), and Purpure (purple). A fundamental law dictates that metal must never be placed upon metal, nor colour upon colour, ensuring visual clarity from a distance. Furs like Ermine and Vair add further structural texture to medieval coats of arms.

