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Diamond is about 58 times harder than the next hardest mineral

Diamond is about 58 times harder than the next hardest mineral

Diamond is about 58 times harder than the next hardest mineral

On the Mohs scale diamond is 10; corundum (sapphire/ruby) is 9. Real cutting hardness differences are far larger than the one-point gap suggests.

Shahzad Mahota Shahzad Mahota @shahzad-mahota

Diamond is about 58 times harder than the next hardest mineral