Diamonds are harder than chalk.
yes
Diamonds can only be scratched by other diamonds. Diamond is the hardest natural mineral.
Diamond are only scratched by diamonds.
Diamonds are proven to scratch all minerals including itself.
Corundum can scratch almost any mineral that isn't diamond.
diamonds you idiot, even guys can answer that !
No. Only another diamond can scratch a diamond.
No. A diamond can still be scratched by another diamond.
* The particles of dustless chalk are very heavy and tend to fall directly to the floor instead of floating in the air, while the particles of the normal chalk floats in the air. * The dustless chalk writes smoothly without scratch, while the normal chalk leaves some scratches on the board. * The dustless chalk does not break easily while the normal chalk breaks easily.
Since diamond is the hardest mineral, diamonds are used to enhance tools and precision instruments, simply because they can cut through **anything**.
Take the two and scratch them off of each other. Which ever is scratched is the crystal. Diamonds are always harder. You can also try to scratch it off of other things too, but the diamond will never scratch.
the answer is something harder than fluorite some examples are granite , magnetite , diamonds , and quartz .