Across the Roman Empire, fibulae (or brooches) were originally used for fastening garments. They came in a variety of shapes, but all were based on the safety pin principle. As the origin of this piece shows, Roman conquests spread the use of the fibula, which became the basis for more complicated brooches, and the style remained popular right up until the Middle Ages.
To discover more about Celtic culture, please visit our relevant blog post: Bronze Age Britain