The hardest substance in a rock would be the hardest mineral of which the rock is composed.
yes Granite is a comman material
Diamond is the hardest mineral anywhere!
Diamond is the hardest known mineral, which is a physical property of the mineral.
I don't know if diamond is considered a rock but otherwise diamond is the hardest mineral. Diamonds are created by the compression of minerals deep inside the the crust (Thinnest layer of the Earth)
Granite has a Rockwell hardness of 7, making it one of the hardest rocks. Talc scores a 1 on the scale, being extremely soft, whereas a diamond is rated at 10, the hardest known mineral.
Yes, diamond is harder than granite. Diamond is the hardest mineral known. And it is several times harder than granite.
Granite.
The hardest mineral is diamond, and the softest mineral is talc.
The hardest mineral is diamond, and the softest mineral is talc.
Diamond is the hardest mineral known.
Silicon Dioxide (known as Quartz) is not the hardest mineral, the hardest mineral is an allotrope of carbon called diamond. Quartz is only the 7th hardest mineral.
Diamonds are the hardest mineral and the agate is the secod hardest mineral.
Diamond is the hardest mineral on earth.
Diamonds are the hardest mineral, but not the 'strongest'.
No, granite is not an ore mineral. Ores are the rock form of certain metals.
The hardest substance in a rock would be the hardest mineral of which the rock is composed.