Glossary · term

Mohs hardness

Mineralogy

Aliases
Mohs, hardness
Domain
Mineralogy

Definition

A 1–10 scratch scale: each mineral scratches the ones below it. Talc 1, gypsum 2, calcite 3, quartz 7, corundum 9, diamond 10. Ordinal, not linear.

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From the Glossary database in Notion, last edited 2026-08-17. This page is the row, rendered by the build; nothing on it is written by hand.