Guide To Earring Findings
This is the traditional French (or Fish) Hook with coil and ball. The ball is frequently used to coordinate metals.
The ear stud with nut, another very traditional style . The ball can be any size or replaced by designs.
This is a "simple" French Hook, without coil or ball and hence shorter.
A Leverback, also shown open. It inserts exactly as a regular hook but then closes for security.
The clip on. One of many forms used for unpierced ears.
The kidney wire. It is secure because it closes BUT when out of the ear, the earring can fall off unless the ring is closed, which changes the shape.