For pierced ears, there are different earring styles featuring two types of closures:
The most common type, this closure secures the earring with a "butterfly" that slides onto the post passing through the earlobe.
For a more secure hold, the post is sometimes threaded. While more difficult to put on and remove, this closure is useful for securing higher-value earrings (diamonds, precious metals).
This type of backing, which is more expensive, consists of small discs with a slightly domed surface that presses against the back of the ear. On either side of the disc, two serrated tabs activate springs that clip onto the notch of the post.
These earrings, consisting of a post that passes through the ear, are secured on the earlobe, giving the illusion of floating on it. The Alpa back is preferred for higher-end models, particularly diamond styles.
These circular or semi-circular earrings are made from metal tubing. The hoop is secured to the ear with a thinner post at the front and a pivot at the back that slides into the post.
Hook earrings, most often in silver or fashion metal, are made from a solid curved wire that hooks onto the ear with no back closure. The wire is long enough, however, to prevent the earring from being lost.
Earrings with suspended motifs, whose defining feature is a hinged closure that wraps around and secures the earlobe. The leverback dates back to the mid-19th century and owes its name to its original purpose: preventing the piercing hole from closing during the night in the first months after getting ears pierced.