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A number from one to ten ranking scratch resistance.
Also known as: Mohs scale, Scratch hardness
The Mohs scale ranks minerals from talc at one to diamond at ten by which scratches which. It is an ordinal scale, not a measurement: diamond is about four times harder than corundum at nine, and the gaps between the numbers are wildly uneven.
Ranks a mineral's resistance to scratching on a scale from one to ten, defined by which minerals scratch which.
Contexts: Technical drawing, Maps
Is ordinal rather than proportional, so the intervals are uneven and diamond at ten is far more than one step harder than corundum at nine.
Contexts: Technical drawing, Maps
A numeral from one to ten printed in a mineral description or a specimen label.