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