The main device (symbol) in the Josselyn blazon is the escarbuncle. The two main tinctures (colors) are gules and argent.
Gules, the heraldic colour red is very popular, sometimes said to represent “Military Fortitude and Magnanimity”1. It is usually abbreviated as gu and in the days before colour printing was shown in a system known as hatching by vertical lines 2. Although it may look like a French word it is normally pronounced with a hard “g” and may be derived either from the Latin gula (throat) or Arabic gule (rose).3
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) 4. In a sketch or drawing it is represented by plain, unmarked paper 5.
The escarbuncle is a very ancient symbol that actually predates heraldry, although of uncertain origin. In appearance it resembles the “boss” at the centre of a shield and the strengthening rods radiating from it, and this has become its recognised heraldic form. 6. Wade refers to its original meaning as a “symbol of supremacy”. 7