MN830 Sample ID MN830 • Cabinet K Smokey Quartz Crystal 21.1cm W x 12.6cm H x 7.8cm D • 30g Sample TypeMineralColorGray, opaque, whiteLusterVitreous StreakWhiteCleavage/FractureHexagonal FractureSpecific Gravity1 Geographic Location/Date Mohs Hardness 7 Large smoky quartz crystal exhibiting a gray to opaque white coloration with vitreous luster. The crystal features a hexagonal fracture pattern and large clusters of crystal structure. Description of Mohs scale here