Hardness
Hardness scales depend on the relative hardness of one substance to another. The Mohs 'scratch hardness' scale is based on the fact that any mineral on a numbered scale will scratch those of lower numbers and be scratched by those of higher numbers. Diamond is the hardest naturally occurring substance ever found and features at the top of this scale.
Habit
This is the term used to describe the shape of crystallisation favoured by a mineral. For diamond it is the octahedron.
Hardness scales depend on the relative hardness of one substance to another. The Mohs 'scratch hardness' scale is based on the fact that any mineral on a numbered scale will scratch those of lower numbers and be scratched by those of higher numbers. Diamond is the hardest naturally occurring substance ever found and features at the top of this scale.
Habit
This is the term used to describe the shape of crystallisation favoured by a mineral. For diamond it is the octahedron.
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