Gilding is the application of gilt. Gilding encompasses a variety of metallic specialty finishing techniques. Real gold comes in many colors ranging from brilliant 24k red gold to 12k white gold. Additionally, gilding techniques can range from highly polished and burnished water gilding to matte gold finishes. Leaf comes in a variety of materials and is not only limited to gold. Other specialty finishes with metallic leaf can be carried out using copper, aluminum, silver, palladium, or other precious metals with decorative glazing or patinas.