The Ancient Pin That Never Closed

Most Celtic brooches are not actually circles at all. Known as penannular brooches, they feature an incomplete ring that allowed the garment to be fastened without a traditional clasp.

These ingenious fasteners rely on a clever pin mechanism that slides through the fabric and hooks onto the open gap of the ring. While we associate them with early medieval Ireland, their design style has appeared in cultures as far away as North Africa. This simple yet durable structure allowed for heavy cloaks to be pinned securely for centuries. It remains a fascinating example of how a slight modification to a basic ring created a revolutionary tool for ancient fashion.