The links of the chain are made in the form of fish, in the contour of which a circle with an equilateral cross is inscribed. These are symbolic images of Jesus Christ. The Greek word ΙΧΘΥΣ ("ichthys"), fish, was deciphered by ancient Christians as a monogram of the name of Jesus Christ, consisting of the initial letters of the full naming of the Lord: Jesus Christ, God's Son, Savior. In early Christian times, "ichthys" was a short form for the confession of the Christian faith. But not only Christ Himself, all His followers in Christian art and literature are often metaphorically depicted in the form of fish. The oldest sign of Christ are also circles with equilateral crosses inscribed in them. This is the oldest symbol of Jesus Christ. "Cross in a circle" in many ancient pre-Christian cultures was a symbol of the sun. With the adoption of Christianity, a certain form was filled with a new meaning. Indeed, in Christianity, the Lord is glorified as the Light of Truth and the Sun of Truth, enlightening everything with His rays. Therefore, this symbolic ornamental motif has become widespread in the decoration of churches, decoration of manuscripts and objects of decorative and applied art.