If you hit it and say ouch! Teehee, but really, you can do this either by checking the Mose Hardness Scale which lists minerals according to their hardness.
the hardness of a mineral indicates how well it resists scratching or abrasion. it is measured on a numerical scale from 1 (softest) to 10 (hardest): 1 talc2 gypsum3 calcite4 fluorite5 apatite6...
Is a mineral's ability to resist being scratched, and is defined by its location on the numerical Mohs scale of mineral hardness by a designation of a number between 1 and 10. See the related link on...
No, it won't. A harder mineral will always scratch a softer one, but not vice versa because the softer one's composition and structure are not harder than the other's. Would talc scratch diamond?...