Diamond ( an allotrope of carbon) is the hardest material known.
diamond is the hardest thing on earth
The hardest matter on earth is Diamond.
Diamond is the hardest mineral on earth.
yes diomand is the hardest thing on earth
The diamond is the hardest rock (or mineral).
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
it is a mixture
Yes, diamond is the hardest mineral on earth.
Diamond is the hardest mineral known.
No,diamond is the hardest known substance on Earth.
Diamond is the hardest natural mineral on earth, measuring 10 on the Mohs scale, where 10 is the hardest mineral.
It is a pure substance.