You may be thinking of diamond dust, used to polish.
Diamond-like Carbon has a coefficient of friction of as low as 0.05 on polished steel.
No. It's man-made.
Because Diamond is an allotrope of carbon - diamonds are purely made out of carbon.
diamond
Nothing.
yes, a diamond is a crystalline form of pure carbon, there for making it a pure substance.
If you have a silvery substance on the back surface of your diamond, it is not a diamond.
No, Diamond which is entirely made up of carbon is the hardest
Pearl is made by a living organism (an oyster) and is soft. Diamond is made deep in the earth and is the hardest substance known to man.
No natural substance is equal in hardness to a diamond.
diamond is the hardest substance known to science at this time, and graphite is a rather weak substance, and they are both made of the same elements. Their only differences are the arrangement of the molecules
Diamond is the hardest substance on Earth that is non-metal. It is made of carbon atoms arranged in a strong crystal lattice structure, giving it its extraordinary hardness.