diamond
Yes, it is the hardest natural rock on earth.
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
The diamond is the hardest rock (or mineral).
Diamond.
A diamond
The second hardest rock on Earth is quartz. It ranks below diamond in terms of hardness on the Mohs scale.
A rock drill may be tipped with industrial diamonds, because the diamond tip makes the drill harder than the rock(s). Diamond is the hardest natural mineral on Earth.
diamonds- mrs. lautner
Diamond [Allotrope of Carbon]
diamond
Diamond is the hardest natural substance on Earth, ranking 10 on the Mohs scale of mineral hardness, due to its tightly packed carbon atoms in a strong crystal lattice structure.
It is the hardest NATURAL substance- due to the arrangement of the carbon atoms that make up a diamond. (Thee ARE harder materials, but they are manmade.)