A Scottish agate brooch is a decorative piece of jewelry typically made from agate, a type of mineral known for its beautiful, layered colors. These brooches often feature intricate designs and are set in silver or gold, showcasing the natural beauty of the stone. They are popular among collectors and are often associated with Scottish heritage. These brooches became fashionable in the 19th century, particularly during the Victorian era. They are often worn as a symbol of Scottish culture and can be found in various shapes, including traditional Celtic motifs. Many brooches also incorporate other materials, such as pearl or carnelian, enhancing their aesthetic appeal.