Diamond earring jackets are a great way to spice up your jewelry collection. These pretty baubles come in all shapes, sizes, and themes, allowing you to turn any basic earring into something special. Earring jackets are pieces of metal that sit upon the post of an earring. While that is vague, it’s probably the easiest way to describe them. Some earring jackets hang upon a stud and are simple hoops, while others are adorable charms. Still others are gorgeous chandeliers that dangle. There are understated jackets, too, that are disc-shaped pieces of metal, giving a sort of “background” to a simple stud.