Asian lacquerware, which may be called "true lacquer", are objects coated with the treated, dyed and dried sap of "Toxicodendron vernicifluum" or related trees, applied in several coats to a base that is usually wood. This dries to a very hard and smooth surface layer which is durable, waterproof, and attractive in feel and look. Asian lacquer is sometimes painted with pictures, inlaid with shell and other materials, or carved, as well as dusted with gold and given other further decorative treatments.