Burnisher

A tool with a hard smooth rounded surface used for smoothing and polishing, in metal work, ceramics and gilding. Burnishers are typically metal or stone. Typical of contemporary burnishers is the example illustrated here, see thumbnail to rightan agate held in a ferrule, attached to a wooden handle.An example of an object with a burnished surface: A fluted vessel, contemporary, burnished brass.Also see etching.