Hardness (Mohs) Mineral / Material Group
     
1.5 - 3 Amber  
1.5 - 4 (!) Atlantisite  
2 - 2.5 Clinochlore  
2 - 2.5 Mellite  
2 - 3 Phosgenite  
2 - 3 Shomiokite-(Y)  
2 - 4 Chrysocolla  
2.5 Brucite  
2.5 Charlesite  
2.5 - 3 Anglesite  
2.5 - 3 Crocoite  
2.5 - 3 Kurnakovite  
2.5 - 3 Stolzite  
2.5 - 3 Whewellite  
2.5 - 3.5 Bowenite  
2.75 - 3 Wulfenite  
3 Calcite  
3 Cobaltocalcite  
3 Inderite  
3 - 3.5 Angelite / Anhydrite  
3 - 3.5 Barite  
3 - 3.5 Boleite  
3 - 3.5 Celestine  
3 - 3.5 Cerussite  
3 - 3.5 Phosphophyllite  
3 - 3.5 Remondite  
3 - 3.5 Sussexite  
3 - 3.5 Witherite  
3 - 4 Cavansite  
3 - 4 Coral  
3 - 4 Pearls  
3 - 4.5 Shortite  
3.5 Adamite  
3.5 Cubanite  
3.5 Thaumasite  
3.5 - 4 Aragonite  
3.5 - 4 Azurite  
3.5 - 4 Cuprite  
3.5 - 4 Dolomite  
3.5 - 4 Goergeyite  
3.5 - 4 Malachite  
3.5 - 4 Mimetite  
3.5 - 4 Phosphosiderite  
3.5 - 4 Powellite  
3.5 - 4 Pyromorphite  
3.5 - 4 Sphalerite  
3.5 - 4 Zeiringite  
3.5 - 4.5 Magnesite  
3.5 - 5 Nifontovite  
3.75 - 4.25 Siderite