is it true that only a diamond can scratch another diamond?

Answer 1

i suppose that would be true,

Answer 2

Yes, it is very much true that a diamond can only scratch another diamond.

Answer 3

A diamond can scratch anything including other diamonds

Answer 4

Sure,a diamond can scratch another diamond only.Hardness scale is 10.

Answer 5

In 1812 the Mohs scale of mineral hardness was devised by the German mineralogist Frederich Mohs (1773-1839), who selected the ten minerals because they were common or readily available. The scale is not a linear scale, but somewhat arbitrary. The highest number is 10 and it is assigned to naturally occurring diamonds.

But of course man cannot leave these things to naturally occurring minerals...MAN can improve!! So here ya go!

Fullerites, or Polymerized Single Walled NanoTubules (P-SWNT) Beta Carbon Nitride (β-C3N4) This is currently classed by some as a theoretical material, although in 2000, Northwestern University, Illinois claimed to have synthesized minute particles of it.


Beta carbon nitride (β-C3N4) is a theoretical material, derived from theories on crystalline structure.
The material was first proposed in 1985 by Marvin Cohen and Amy Liu. Examining the nature of crystalline bonds they theorised that carbon and nitrogen atoms could form a particularly short and strong bond in a stable lattice in a ratio of 1:1.3. That this material would be harder than diamond on the Mohs scale was first proposed in 1989.

The theoretical material has so far proved impossible to make: by nature carbon and nitrogen will not form a crystalline structure. In 2000 a team at Northwestern University, Illinois claimed to have created atom-thick layers of the material by magnetron sputtering: creating at least partially sp³-bonded crystalline carbon nitrides at the junction of successive layers of titanium nitride and carbon nitride.
Ultrahard Fullerite C60

The hardest substance known today is ultrahard fullerite, C60, which has an estimated hardness 1.17-1.52 times that of diamond. However, this material is currently available only in microscopic quantities: its scratch hardness had to be measured under the atomic force microscope.

Ultrahard fullerite (C60) is a unique version of fullerene with three-dimensional polymer bonds. This should not be confused with P-SWNT fullerite, even though that material is also a polymerized version of fullerene. It has been shown that ultrahard fullerite when testing diamond hardness with a scanning force microscope can scratch diamond. In turn, using more accurate measurements, these values are now known for diamond hardness. A Type IIa diamond (111) has a hardness value of 167±6 gigapascals (GPa) when scratched with an ultrahard fullerite tip. A Type IIa diamond (111) has a hardness value of 231±5 GPa when scratched with a diamond tip; this leads to hypothetically inflated values.

Ultrahard fullerite has a hardness value of 310 GPa, though the actual value may range ±40 GPa, since testing done using an ultrahard fullerite tip on ultrahard fullerite will lead to, like diamond on diamond, distorted values. It is thought that beta carbon nitride will have a hardness value, if harder than diamond, less than that of ultrahard fullerite.

Hope this helps.

Answer 6

That is true so look at what u think is a diamond and if it is it should be polished and no scratches.

Answer 7

Not too sure - I did offer a very nice diamond to a gorgeous girl and she told me to go and scratch my ar'se.

Any good?

Answer 8

Yes that is true,diamond is the hardest substance on earth and they are used as abrasives.

Answer 9

Diamonds is the only substances that only mate with its
own.


www.myvideotalk.net/jerome

Answer 10

synthetic "diamonds" can also scratch a diamond .

Answer 11

yes