Reverse painted glass protective eye stud and cufflink set in sterling silver.  An evil eye or protective eye is a talisman or amulet, designed in the shape of an eye, traditionally in the colors blue or green, that indicate spiritual protection.

In Turkey, it is known by the name nazar boncuğu.  The Greeks refer to it as the eye. Through out the mediterranean the protective eye is an ever present image used to ward off the evil eye.