The hardest rock is PANTERA, or Diamonds. Depending on your question.
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
The harder rock is diamond
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
Probably orthoquartzite, although some consider it a metamorphic rock.
One of the hardest things to think about could be contemplating mortality and the finite nature of life. Understanding our own impermanence and grappling with the concept of death can be a challenging and profound contemplation for many people.
The diamond is the hardest rock (or mineral).
Corundum is a mineral, therefore it could not be the hardest rock.
University of Texas hands down Rice University is the hardest
Now that is a HARD question!
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
Diorite is the second hardest rock in the worl - Vellond
Music or an actual rock?
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Diamonds are the hardest rock.
yes
Corundum.
The softest rock is generally talc, with a Mohs hardness of 1, while the hardest rock is diamond, with a Mohs hardness of 10. Other common rocks fall in between, such as gypsum (2), calcite (3), quartz (7), and feldspar (6-7).