smash one into the other, the hardest will damage or break the soffest
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
The diamond is the hardest rock (or mineral).
the softest rock is talc and the hardest is a diamond
Corundum is a mineral, therefore it could not be the hardest rock.
Hardest Mineral=Diamond Second would be corundum.etc. etc....but these are minerals. Rocks are a combination of at least 2 minerals. A hard "rock" would be nearly any mafic, igneous rock.
The hardest rock is PANTERA, or Diamonds. Depending on your question.
Diorite is the second hardest rock in the worl - Vellond
Music or an actual rock?
Diamonds is not a stone it's crystal actually. But the hardest stone is granite stone.
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
Diamonds are the hardest rock.
Least likely to break from fracture, generally speaking, would be unweathered igneous rock.