A diamond is the hardest mineral on earth and your finger nail would break in half before you got enough pressure on a diamond to put a crack in it. Much less break it.
No, diamond is harder than enamel.
Diamond is much harder than copper. On the Mohs hardness scale (higher numbers are harder), diamond is a 10 and copper is somewhere between 3 and 4.
Iron Ranks about a 4-5 on the Moh's hardness scale. A diamond is a perfect 10 diamond. A diamond much harder then iron.
Yes, harder than any metal.
nanodiamonds
Diamond is harder than plastic.
Diamond is harder than onyx.
Diamond is harder than any metal.
No. Diamond is harder than emerald.
No, diamond is harder than enamel.
Yes. It is much harder than your fingernail.
Diamond is harder than steel: you can scratch steel with a diamond, but steel will not scratch a diamond.
diamond
A diamond
nothings harder than a diamond
Nothing is harder then a diamond. Only like a drill can break it.
Yes, diamond is harder than granite. Diamond is the hardest mineral known. And it is several times harder than granite.