General Knowledge - General Science - Discussion

Because of very strong sigma bond between each carbon atom.

Boron carbide is third after diamond and cubic boron carbide.

Yes, wurtzite boron nitride (w-BN) is indeed harder than diamond under certain conditions. When subjected to high pressures, wurtzite boron nitride can exceed the hardness of diamonds by about 18%. This increased hardness is due to a unique atomic bond rearrangement that occurs under stress.

However, it’s important to note that this extreme hardness is not permanent and is observed only under specific conditions.
Another material, lonsdaleite (hexagonal diamond) , has also been found to be harder than both diamond and wurtzite boron nitride.

Only a diamond can cut the other diamond.

Because of its tripod structure and strong carbon bonds.

Diamond is a 3 diemensional lattice.

What about titanium, uranium, plutonium?

Diamond is the hardest metal in the earth it is naturally occurring substance diamond cut diamond. We know silicon carbide cut hardest substance.

Diamonds can be cut only through diamond. But for other metals they are cut through other metal. This shows the strongest in world.

Diamond is currently thought to be the hardest natural material on Earth, having a hardness of ten out of ten on the Mohs scale of mineral hardness.

Diamond is made up of carbon atoms which share strong covalent bonds (where electrons are shared between atoms) and is equally spaced in a lattice arrangement.