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.
The hardest mineral is diamond, and the softest mineral is talc.
i think sulfur is the softest and crystal is hardest
The softest known mineral is 'TALC'. The hardest known mineral is 'DIAMOND' (according to Friedrich Mohs scale)
The softest mineral is talc, and the hardest is diamond. You can check this on the Mohs hardness scale.
Diamond is the hardest mineral mined in the north of Western Australia. It has a hardness of 10 on the Mohs scale, making it the hardest natural material known to man.
The hardest mineral is diamond, and the softest mineral is talc.
Diamond is the hardest mineral known.
Diamonds are the hardest mineral and the agate is the secod hardest mineral.
Diamond is the hardest mineral on earth.
C.
Diamonds are the hardest mineral, but not the 'strongest'.
The hardest mineral is diamond, and the softest mineral is talc.
Diamond is the hardest mineral, scoring a perfect 10 on the Mohs scale of mineral hardness.
i think sulfur is the softest and crystal is hardest
A diamond and talc
The softest known mineral is 'TALC'. The hardest known mineral is 'DIAMOND' (according to Friedrich Mohs scale)
The hardest mineral is diamond, which has a hardness of 10 on the Mohs scale.