A diadem is a type of ornamental crown or headband that symbolizes royalty and authority. Traditionally made of precious metals and adorned with jewels, diadems have been worn by monarchs and nobility throughout history. They are often associated with the power and dignity of a ruler, serving as a visual representation of their status. In ancient cultures, such as those of Greece and Rome, diadems were used in ceremonies and were often given as awards to victors in competitions. The design of a diadem can vary widely, but it typically features a band that encircles the head, sometimes with decorative elements that rise above the forehead.