In the context of objects such as Zeus' master bolt or Poseidon's trident, the closest I could find was a pomegranate.
Both the pomograntet and the asphodel have been associated with Persephone as her symbols.
pomegranate
Here most common symbol is the Pomegranate.
A explanation of the changing seasons.
Persephone used a silver bow and arrow and often in her mothers steps(Demeter) used a staff
Symbol of authority or office.
The symbol for Tennessee Valley Authority in the NYSE is: TVC.
Ares's symbol of authority is often depicted as a flaming torch or a javelin. These symbols represent his connection to war, violence, and power.
Persephone is often robed, holding sheafs of grain and a flaming torch. A flower that shows her as Queen of the Underworld is asphodel. Being a Queen, she had no need of a weapon.
In my company it's a bowler hat with a glittery pink velvet band. No one contradicts the Hat. To my knowledge, there's no general symbol of authority and as such a symbol would have authority over me too, i really should know. Your question needs to be more specific.
Nymphs are mythological creatures often associated with various elements of nature. The symbol of authority for nymphs is often a Greek god such as Zeus.
spera and a cranela