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It is popularly known that, Diamond is the hardest substance on the earth.....However, Scientists say even Boron nitride is harder than Diamond.
But, well known hardest substance is Diamond.
Harder than everything is being "Honest"!
Diamond is hard substance on the earth.
Diamond is currently thought to be the hardest natural material on Earth,
Diamond
Diamond is the hardest NATURAL substance on earth.
On MOH's scale of hardness, where1 is the softest and10 is the hardest, diamond is at the top of the scale which makes it the hardest natural substance on earth.
Diamond is the hardest subtance in the wrold having hardness on MOHO scale10. molicules / atoms are packed togather in a such a way that makes the diamond hardest.
no doubt it is Diamond ...
