The lozenge in heraldry is a diamond-shaped rhombus charge (an object that can be placed on the field of the shield), usually somewhat narrower than it is tall.
It is to be distinguished in modern heraldry from the fusil, which is like the lozenge but narrower, though the distinction has not always been as fine and is not always observed even today.
In civic heraldry, a lozenge sable is often used in coal-mining communities to represent a lump of coal.
A lozenge-shaped escutcheon is used to depict heraldry for a female (in continental Europe especially an unmarried woman), but is also sometimes used as a shape for mural monuments in churches which commemorate females, as a shield was considered inappropriate for women who did not generally participate in combat; for the same reason, clergymen were also sometimes given oval-shaped arms.
[2][3] Funerary hatchments are generally shown within lozenge-shaped frames, for both male and female deceased.