The diamond is the hardest rock (or mineral).
Diamond.
diamond
Yes, it is the hardest natural rock on earth.
The second hardest rock on Earth is quartz. It ranks below diamond in terms of hardness on the Mohs scale.
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
diamonds- mrs. lautner
Corundum is a mineral, therefore it could not be the hardest rock.
The hardest matter on earth is Diamond.
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
1.talc2.gypsum3.calcite4. fluorite5.apatite6.feldspar7.quarts8.topaz9.corundum10.diamond
Diorite is the second hardest rock in the worl - Vellond
The hardest rock is PANTERA, or Diamonds. Depending on your question.