A nazar or evil eye stone (Turkish: nazar boncuğu) is an amulet that is meant to protect against the evil eye ("evil eye", from nazar and "amulet" from boncuğu). It is most common in Turkey, Armenia, Iranand Greece. In Turkey it is ubiquitous in offices and homes, in jewellery, including for babies, on vehicles, doors, horses and even cell phones.
It is usually seen in the form of a flattened bead or hanging ornament, made by hand from coloured glass, and used as a necklace, or attached to bracelets or anklets. Typically it is composed of concentric circles or droplet shapes – from inside out: dark blue (or black), light blue, white and black (occasionally a yellow/gold edge circle) and is sometimes referred to as the blue eye.