MN204 Sample ID MN204 • Cabinet U Smoky Quartz 3.7cm W x 2.83cm H x 3.1cm D • 58g Sample TypeMineralColorDark grey/blackLusteradamantite StreakLight whiteCleavage/FractureHexagonalSpecific Gravity1 Geographic Location/DateHerkimer New York Mohs Hardness 7 Two samples covered in Fine layer of small smoky black crystals with good definition Description of Mohs scale here