No, diamond's are the hardest substance known to man so far.
gympsum can scratch diamond
A diamond will scratch anything and everything, including another diamond.
No. Diamond will scratch steel, however,
It would leave a scratch because a diamond is harder than glass; diamond being the hardest material on the Moh's Scale of hardness.
Diamond is the hardest known substance, but one diamond can scratch another diamond. If that was not the case, there would be no way for jewelers to shape diamonds as they do, into faceted jewels, instead of lumpy stones.
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.
A diamond can scratch a diamond, but one diamond cannot scratch itself.
No. Only a diamond can scratch another diamond.
gympsum can scratch diamond
A diamond will scratch anything and everything, including another diamond.
scratch it with sandpaper.....or steel wool.
Sandpaper is made with corundum because it is extremely hard (9 on the Moh's Scale of Hardness) compared to just about anything else, except diamond (which top the scale at 10). This "hardness" is basically the factor which determines what happens when scraped against another material. If the corundum in the sandpaper is harder than whatever you are rubbing it against, then it will scratch the surface. If the sandpaper is used on something harder than corundum, the sandpaper will not be able to leave abrasions. Corundum is used because there are very few materials which it will fail to scratch.
No. Diamond will scratch steel, however,
Nope! A diamond is the hardest substance on earth so only a diamond can scratch a diamond!
Yes, in fact, it is the only way to scratch a diamond.
Yes: not a good use for a diamond, but yes, a diamond will scratch a nail.
Yes, it can scratch and abrade it quit dramaticly.