The lozenge in heraldry is a diamond-shaped rhombus charge, usually somewhat narrower than it is tall. It is to be distinguished in modern heraldry from the fusil, which is like the lozenge but narrow
Ledger slab with lozenge arms of Dorothy Neville (1605–1672), Kirby Cane, Norfolk.
3 fusils—Per fess azure and vair ancient; three fusils in chief and a crescent in base, or; a bordure engrailed argent—Freeman of Murtle, Scotland
5 rustres—Argent; on a saltire gules five rustres argent, in chief a lion rampant of the second (gules)—Dalrymple of Woodhead, Scotland
In heraldry, variations of the field are any of a number of ways that a field may be covered with a pattern, rather than a flat tincture or a simple division of the field.
Lozenge (heraldry)
…of the escutcheon". A field covered in a pattern of lozenges is described as lozengy; similar fields of mascles are masculy, and fusils, fusily (see Variation of the field). 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…
Diapering of the field of the shield of the Diocese of Worcester: Argent, ten torteaux four three two and one