The evil eye stone, also known as a Nazar boncuk or simply a "nazar," is a popular talisman believed to protect against the evil eye, a malevolent gaze that is thought to cause harm or misfortune. The evil eye concept can be found in various cultures and is particularly prevalent in Mediterranean and Middle Eastern regions.

The evil eye stone is typically a small, decorative glass or ceramic bead, often featuring a concentric blue and white design resembling an eye. The central pupil is usually dark blue or black, surrounded by a light blue or white background. The colors blue and white are commonly associated with protection and are believed to repel negative energy and ward off the evil eye's effects.

The Nazar boncuk is often worn as jewelry, such as necklaces, bracelets, or earrings, or displayed in homes, offices, or vehicles as a form of decoration and protection. It is believed that the eye-shaped amulet absorbs the negative energy directed towards the wearer or the surroundings and acts as a shield against the evil eye's harmful influence.

The exact origins of the evil eye stone are unclear, as the belief in the evil eye predates recorded history. Nevertheless, the concept has endured and continues to be embraced by many cultures as a symbol of protection and good fortune.

It's important to note that the evil eye stone is primarily associated with folklore, cultural beliefs, and superstitions. Its power and efficacy are subjective and depend on individual beliefs and interpretations.