Rocks & Minerals with a Mohs Hardness of 10
On the Mohs scale, hardness 10 is defined by diamond. The 1 rocks and minerals below fall at or within the 10 to 11 band, so they scratch anything softer on this page and are scratched by anything harder.
Field test: It scratches glass, steel and even quartz; only harder gems will mark it.
Hardness is a range for many species, so an entry listed here may also appear at the neighboring level.
All hardness 10 minerals (1)
Frequently asked questions
What common minerals have a hardness of 10?
Diamond all sit at Mohs 10.
What scratches a mineral with hardness 10?
Anything harder on the Mohs scale: nothing natural; only another diamond. It scratches glass, steel and even quartz; only harder gems will mark it.
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