The Greek noun daktylios means a ring, especially a finger ring. In the ancient world, rings were primarily signet rings — instruments of authority used to seal documents and authenticate transactions. The ring was a symbol of status, trust, and delegated authority. It appears in Luke 15:22 when the father places a ring on the returning prodigal's finger.
The father's command to bring the best robe, sandals, and a daktylios for the returning son (Luke 15:22) is not mere celebration — it is restoration of status. In the ancient world, giving a son a signet ring restored his standing as a legal heir with authority to act in the family name. The prodigal came home expecting to be made a servant; he was made a son again. The daktylios is the gospel enacted in jewelry: God does not merely pardon the returning sinner, He restores his full dignity as a child and heir.