The tensile strength of carbon nanotubes is approximately 100 times greater than that of steel of the same diameter.

Diamond, graphite and fullerenes (substances that include nanotubes and ‘buckyballs’ , such as buckminsterfullerene) are three allotropes of pure carbon.

This stable network of covalent bonds and hexagonal rings is the reason that diamond is so incredibly strong as a substance. Diamond and GraphiteDiamond and graphite are two allotropes of carbon — pure forms of the same element that differ in structure.

When an element exists in more than one crystalline form, those forms are called allotropes; the two most common allotropes of carbon are diamond and graphite. Every carbon atom is covalently bonded at the four corners of the tetrahedron to four other carbon atoms.

The difference between the three naturally occurring allotropes is the structure and bonding of the atoms within the allotropes; diamond enjoying a diamond lattice crystalline structure, graphite having a honeycomb lattice structure, and amorphouscarbon (such as coal or soot) does not have a crystalline structure.

In short, acids do not dissolve diamonds because there simply isn’t an acid corrosive enough to destroy the strong carbon crystal structure of a diamond. Some acids may, however, damage diamonds.

In a graphite molecule, one valence electron of each carbon atom remains free, Thus making graphite a good conductor of electricity. Whereas in diamond, they have no free mobile electron. Hence there won’t be flow of electrons That is the reason behind diamond are bad conductor electricity.

Diamond is the only gem made of a single element: It is typically about 99.95 percent carbon. Diamond forms under high temperature and pressure conditions that exist only within a specific depth range (about 100 miles) beneath the earth’s surface.

Do lab grown diamonds test as real diamonds? Yes! Lab grown diamonds test positive on a diamond tester because they’re made of crystallized carbon, just as mined diamonds are.

Diamonds are all priced per carat. Lets say a 0.50 carat diamond has a price of $1400 per carat. That diamond’s price for the stone would be $1400 * 0.50, or $700….Calculating Diamond Price Per Carat.

Moissanite, a naturally occurring silicon-carbide, is almost as hard as diamond. It is a rare mineral, discovered by the French chemist Henri Moissan in 1893 while examining rock samples from a meteor crater located in Canyon Diablo, Arizona. Hexagonal boron-nitride is 18% harder than diamond.

diamonds

As an example, you can scratch steel with a diamond, but you can easily shatter a diamond with a hammer. The diamond is hard, the hammer is strong. This makes the diamond incredibly hard and is why it is able to scratch any other material.

Steel and other rocks can be used to easily crush a diamond. Like I said earlier, super heating a diamond can set it on fire, and even throwing diamonds into your furnace will burn them all up.

Pound for pound, diamonds are not very good at stopping bullets. The energy absorbed by diamond shattering is much less than the energy absorbed by metals deforming. A plate of steel would be better at stopping bullets than a plate of diamond. “People mix between hardness and toughness.

It doesn’t seem unreasonable to wonder whether diamonds are bulletproof, since diamond is the world’s hardest natural material. Diamonds are not however bulletproof in general, as while they are hard, they are not particularly tough and their brittleness will cause them to shatter when struck by a bullet.

(PhysOrg.com) — Currently, diamond is regarded to be the hardest known material in the world. But by considering large compressive pressures under indenters, scientists have calculated that a material called wurtzite boron nitride (w-BN) has a greater indentation strength than diamond.

A diamond is the hardest material on the earth and the most expensive gemstone as well. Diamonds are not rare but high-quality diamonds that can be used in the jewelry are rare. In addition, the size and quality of the diamond also plays a major role on the price. These are the reasons why diamonds are so expensive.

Diamonds remain the most scratch-resistant material known to humanity. The structure of boron nitride in its wurtzite configuration is stronger than diamonds. Boron nitride can also be used to construct nanotubes, aerogels, and a wide variety of other fascinating applications.

Nuclear pasta

The strongest rock in the world is diabase, followed closely by other fine-grained igneous rocks and quartzite. Diabase is strongest in compression, tension, and shear stress. If mineral hardness is the determining factor of strength then diamond is technically the strongest rock in the world.

The World’s Strongest Stuff

• Diamond. Unmatched in its ability to resist being scratched, this much-loved gemstone ranks the highest in terms of hardness.
• Graphene.
• Spider silk.
• Carbon/carbon composite.
• Silicon carbide.
• Nickel-based super-alloys.

Talc is the softest mineral on Earth. The Mohs scale of hardness uses talc as its starting-point, with a value of 1.

The Hardest Languages To Learn For English Speakers

1. Mandarin Chinese. Interestingly, the hardest language to learn is also the most widely spoken native language in the world.
2. Arabic.
3. Polish.
4. Russian.
5. Turkish.
6. Danish.

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