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.
diamonds are one of them
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
The hardest rocks show the least effects from erosion and weathering and may cap a less resistant rock.
Diamond is the hardest natural material and can cut through other rocks. Its exceptional hardness is due to its unique crystal structure.
Time.
Pokemon Rocks Hardest
It's been awhile since I played, but in my opinion, "Play With Me" is the hardest. I have trouble playing that song on medium!
Diamonds are the hardest mineral and the agate is the secod hardest mineral.
Diamonds are the hardest known substance
I would have to say Steven is the hardest, all of them are easy for me, but Steven is the hardest I have faced, and he is easy peasy lemon squeezy. I would have to say Steven is the hardest, all of them are easy for me, but Steven is the hardest I have faced, and he is easy peasy lemon squeezy.
A diamond is the hardest mineral. A diamond can scratch all other minerals or rocks and cannot be scratched by another mineral or rock except another diamond.
Diamond is a the hardest mineral, so yes. Minerals are what make up rocks.