A diamond shape often with rounded rather than
pointed ends, the lozenge is often overlooked, but is actually a
representation of the female genitalia. As such, its most popular
appearance is probably as the vesica piscis, the sacred doorway through
which spirit enters the world of matter. In heraldry, for example, the
lozenge is used in place of the masculine shield, to denote a coat of
arms belonging to a woman or a noncombative male, such as a member of
the clergy.