Diorite is the second hardest rock in the worl - Vellond
The second hardest rock on Earth is quartz. It ranks below diamond in terms of hardness on the Mohs scale.
talc is the softest rock in the world while diamond is the hardest rock
The second hardest natural substance on earth is moissanite, which is a mineral composed of silicon carbide. Only diamond, which is made of pure carbon, is harder than moissanite.
Diamond is the hardest rock in the world and we can gate it from nature .also man make it but it is not a real .
The diamond is the hardest rock (or mineral).
Diamond is the hardest substance in the world, but the second hardest substance is boron nitride. It is often used in high-temperature and high-friction applications due to its exceptional hardness and thermal stability.
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.
Corundum is a mineral, therefore it could not be the hardest rock.
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
The hardest rock is PANTERA, or Diamonds. Depending on your question.
Music or an actual rock?
The second hardest substance in the world is mineral lonsdaleite, or hexagonal diamond. It's made up from the same materials as diamonds, but it has a slightly different structor. Mineral lonsdaleite is extremely rare in nature.