MN712 Sample ID MN712 • Cabinet H Malachite 9cm W x 15.5cm H x 8.7cm D • 2312g Sample TypeMineralColorGreen, Brown, PurpleLusterDull StreakGreenCleavage/FracturePerfect / UnevenSpecific GravityNA Geographic Location/DateRussia Mohs Hardness 4 Two large specimens of Malachite. Both specimens are too large to take the specific gravity, so that value is unknown. The brown, dull luster specimen with stripes is the representative. The other specimen has dull green, with a vitreous purple crystal scattered across its surface. Description of Mohs scale here