An ancient Egyptian hieroglyphic sign shaped like a cross with a looped top, signifying life.
A staff with a single serpent coiled around it, associated in Greek mythology with Asclepius, the god of medicine.
A winged staff with two serpents wound around it, originally the attribute of Hermes (Mercury), the messenger god.
A circle enclosing a vertical line and two downward diagonal lines, originally designed for the British nuclear disarmament movement.
An ancient hooked-cross symbol with a long history as a sign of good fortune across many cultures, and a separate, more recent history as the central emblem of Nazi Germany.
An upright cross with a shorter crossbar set above the centre.
A diagonal cross in the form of an X.
A six-pointed star formed from two overlapping triangles.
A crescent moon paired with a star.
A spoked wheel representing the Buddha's teaching.
A circle with an arrow pointing up and right — Mars, the male sign, and iron.
A circle above a cross — Venus, the female sign, and copper.
A circle with a dot at its centre — the Sun, and gold in alchemy.
A crescent — the Moon, and silver in alchemy.
A horned circle above a cross — Mercury, and quicksilver.
A stylised numeral four or Greek zeta crossed by a bar — Jupiter, and tin.
A crossed sickle shape — Saturn, and lead.
A circle quartered by a cross — the Earth.
A circle with a vertical stroke rising to a cross — Uranus.
A trident — Neptune.