What materials did the ancient Celts use for artwork?

The ancient Celts primarily used materials such as metal, stone, wood, and bone for their artwork. They were skilled in metalworking, creating intricate designs in gold, silver, and bronze for jewelry, weapons, and decorative items. Stone carvings, often featuring Celtic knots and spirals, were commonly found in monuments and burial sites. Additionally, they utilized organic materials like wood for sculptures and functional objects, showcasing their artistic versatility.