Agate, 155 grams, 56 mm long by 52 mm wide by 38 mm thick. Circa 1st century AD. A rare 'polisher' or 'rubber' in a hard banded agate stone and having several working faces. Striations from use may be seen on several faces. Reference: Evans, Sir J. The Ancient Stone Implements Weapons and Ornaments of Great Britain, 1897. Provenance: found in association with Roman pottery fragments in Carthage in 1954. A very attractive and unusual implement.