A diamond can scratch a diamond, but one diamond cannot scratch itself.
No. Only a diamond can scratch another diamond.
Nope! A diamond is the hardest substance on earth so only a diamond can scratch a diamond!
Yes: not a good use for a diamond, but yes, a diamond will scratch a nail.
Yes, in fact, it is the only way to scratch a diamond.
Diamond is harder than steel: you can scratch steel with a diamond, but steel will not scratch a diamond.
noNo other way around
Diamond will scratch everything, including diamond.
Diamond
A diamond can only be scratched by another diamond due to its hardness. No other material is hard enough to scratch a diamond.
The field test for diamond is 'extreme hardness'. If you believe that you've found a diamond stone, you can take it to a jeweler, who will apply a probe and verify your find as a diamond stone, or not.
No, gypsum cannot scratch diamond. Diamond is the hardest mineral on the Mohs scale with a rating of 10, while gypsum is much softer with a rating of 2, which means diamond is able to scratch gypsum but not the other way around.