When traveling in Greece, many jewels and pendants have blue eyes. What does it stand for?

It means that those evil eyes hidden in the dark will bring bad luck to people. The eye of Medusa is a magic mirror to resist and reflect the intrusion of evil eyes.

The pattern of blue eyes is called the eye of turkey, and the standard term is the eye of medusa.

Medusa is a banshee in Greek mythology. It is said that anyone who looks directly into her eyes can become a stone statue.

Extended data:

The origin of Medusa's eyes;

It is said that Medusa was once a beautiful girl. Because she thinks she is beautiful, she overreaches herself and compares with the goddess of wisdom. Athena was enraged. She cursed her and turned Medusa's hair into countless poisonous snakes. The beauty turned into a monster. What is more frightening is that her eyes are shining with terrible light, and anyone who looks directly into Medusa's eyes will turn into a stone statue.

References:

Baidu Encyclopedia-Eye of Turkey

Baidu Encyclopedia-Medusa