Home›Rocks and Minerals›Minerals›Hardness›1.000000Browse By1.000000HardnessComments (0)Reader Challenges (0)Hardness1.000000Hardness1 entry2.000000Hardness1 entry2.500000Hardness2 entries3.000000Hardness1 entry3.75 to 5.5 MohsHardness6 entries5.75 to 6.25 MohsHardness6 entries6.5 to 6.75 MohsHardness5 entries7 to 7.25 MohsHardness6 entries7.5 to 8.5 MohsHardness7 entriesComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.