Eye bead

A nazar (Turkish: nazar boncuğu, Old Turkic: gökçe munçuk, meaning "blue bead") is an eye-shaped amulet believed to protect against the evil eye. “Evil eye”, from boncuğu (derivative of boncuk, which means “bead” in Turkish) and nazar (from the Arabic نظر, “sight” or “seeing”).

In Persian/Afghan folklore, it is called a cheshm nazar (چشم نظر) or nazar ghorboni (نظرقربونی). They believe that if a person is complimented a lot, they will be jinxed and often sick the next day unless a verse of the Quran is recited.

In Urdu, it is also called bazaar (نظر).

A typical nazar is made of handmade glass featuring concentric circles or teardrop shapes in dark blue, white, light blue and black, occasionally with a yellow/gold edge.

As a legacy of the Turkish Ottoman Empire, it is a common sight in Turkey, Macedonia, Albania, Bosnia and Herzegovina, Bulgaria, Greece, Cyprus, Syria, Lebanon, Israel, Egypt, Armenia, Iran, India, Afghanistan, Pakistan, Iraq and Azerbaijan, where the nazar is often hung in homes, offices, cars, children's clothing, or incorporated in jewellery and ornaments. They are a popular choice of souvenir with tourists.

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Wikipedia