Can you scratch your stone with corrundum paper or corrundum stick? Corrundum hardness is 9. Diamond hardness is 10. Your stone will be diamond without scratch on your stone after scratching your stone with corrundum
is that quartz?
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Can you scratch your stone with corrundum paper or corrundum stick? Corrundum hardness is 9. Diamond hardness is 10. Your stone will be diamond without scratch on your stone after scratching your stone with corrundum
is that quartz?