MN666 Sample ID MN666 • Cabinet H Orpiment 4.27cm W x 5.91cm H x 2.42cm D • 110g Sample TypeMineralColorYellow, OrangeLusterPearly StreakYellowCleavage/FracturePerfect/UnevenSpecific Gravity3.24 Geographic Location/Date Mohs Hardness 2 A small specimen of Orpiment, a yellow and orange mineral. There are small crystals in the specimen, covered in yellow dust. There does appear to be a matrix of a black rock. When touched, dust comes off in large volumes. Description of Mohs scale here