MN342 Sample ID MN342 • Educational Cabinets Quartz (var. Amethyst) 10.189cm W x 3.255cm H x 8.116cm D • 316g Sample TypeMineralColorPurpleLusterVitreous StreakWhiteCleavage/FractureUneven fractureSpecific Gravity2.63 Geographic Location/Date Mohs Hardness 7 A collection of three. The representative is the mid-sized one. The two largest are clearly purple. However the smallest seems to be Darker and possibly faded. It is possible it may be a smoky quartz. All have pyramidal terminations of their crystals. Description of Mohs scale here