Enamels are decorative coatings made from powdered glass that are fused to a surface through high heat. They are commonly used on metals, ceramics, and glass to create a smooth, glossy finish. The process involves applying the powdered enamel to the surface and then heating it in a kiln, where it melts and forms a durable layer. Enamels can come in various colors and finishes, making them popular in art and design. They are often used in jewelry, fine art, and household items to enhance aesthetics and provide protection against wear and corrosion.