♆

Alternative forms

 * Neptune symbol (barbed).svg – the symbol commonly has barbs on the tines.
 * Neptune orb symbol (fixed width).svg – orbed variant common in German-language sources alongside $⟨♁⟩$ for the Earth and $⟨⛢⟩$ for Uranus, so that most of the planetary symbols contain an orb; sometimes with horizontal barbs on the outer tines so that those look like an inverted omega, $⟨℧⟩$.
 * Bismuth trident symbol.svg – another common variant today; this form of Neptune's trident was used by Newton as a symbol for bismuth, before the planet Neptune had been discovered. Typefaces that use this form may harmonize it with Jupiter so that it looks like $⟨Jupiter symbol (fixed width).svg⟩$ reflected on itself.
 * – Greek capital letter psi is sometimes used as a typographic substitute.

When the symbol has a cross at bottom and the tines do not bear barbs, it may be identical to variants of $⟨🝁⟩$, an alchemical symbol for for quicklime.

Etymology
The trident of Neptune, the Ancient Roman god of the sea.

Symbol

 * 1)  Neptune.
 * 2)  bismuth.

Usage notes
As one of several alchemical symbols for bismuth, Neptune's trident is not attested with barbs on the tines, and is unlikely to have ever had a planetary cross or orb at bottom, but a distinct character is not available in Unicode, and it is identical to the design of the planetary symbol in some typefaces.

Synonyms

 * ⯉
 * Ψ

Derived terms

 * 🜾 – bismuth ore