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Diamond is tops, but depending on the growth pattern of the crystal, not all diamonds are of equal hardness. And the hardest ones are used for polishing the softer ones.
Sapphire would be next in the list, along with ruby, the same bulk material, but with different impurities. (Emerald is lower in Mohs hardness.)
Corundum would fill out the fourth place for the natural materials in the lithosphere.
E&OE
What else can I help you with?
What is hardest mineral and what is the softest?
The hardest mineral is diamond, and the softest mineral is talc.
Which mineral is the hardest on the scale?
Diamond is the hardest mineral known.
Are the diamond is the hardest of all minerals?
Diamonds are the hardest mineral and the agate is the secod hardest mineral.
Is quarts the hardest mineral on earth?
Diamond is the hardest mineral on earth.
What is the hardest or strongest mineral?
Diamonds are the hardest mineral, but not the 'strongest'.
What is the hardest and the softest mineral?
The hardest mineral is diamond, and the softest mineral is talc.
What is the hardes mineral?
Diamond is the hardest mineral, scoring a perfect 10 on the Mohs scale of mineral hardness.
What is the solfest and hardest mineral?
i think sulfur is the softest and crystal is hardest
What are the third and fourth hardest gems?
The third hardest gemstone is ruby and then the fourth hardest is emerald.
Which is the softest and the hardest mineral?
The softest known mineral is 'TALC'. The hardest known mineral is 'DIAMOND' (according to Friedrich Mohs scale)
What is the hardest mineral shown and what is its hardness on the Mohs scale?
The hardest mineral is diamond, which has a hardness of 10 on the Mohs scale.
What is the softest mineral what is the hardest mineral?
A diamond and talc
