diamond
The three hardest substances on Earth are in order:
1. Lonsdaleite**
2. Aggregated Diamond NanoRods ~ ADNR ---Diamond structured, man- made nano rods.
3.Synthesized Fullerines ~ Fullerine family made Ultra- hard with modern science.
Number 2 and 3 are allotropes of Carbon because Carbon is the ideal element because of its atomic number (4 electrons in outer shell = 4 single convalent bonds to make 8) and because of its compact structure. It's outer shell is closest to its nucleus in it's group and period in the Periodic Table.
**Lonsdaleite can only be found when certain meteorites crash into the Earth. Scientists have discovered that this substance is about %58 harder than diamond.
Lonsdaleite-a whopping 58% tougher than Diamond is now the hardest substance in the world
Enamel is the hardest substance in the body. It is a coating that is over your teeth, so make sure you brush your teeth well to keep that coat of enamel healthy for those later years!
Diamond, which is an allotrope of carbon.
It is 10 on the Mohs scale of hardness, by definition.
On the Mohs relative hardness scale, the top three from the hardest down are diamond, corundum, topaz.
Calcite is the Mohs hardness scale mineral with a hardness of 3.
i think diamond is the hardest.
diamond
The air of course!
The hardest substance in the human body is tooth enamel.The enamel that coats your teeth is the hardest substance in the human body.enamel of your teeth?
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
Diamonds.
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
Diamond is the hardest substance in the world
No, diamond is the hardest known natural substance in the world.
No,diamond is the hardest known substance on Earth.
The air of course!
Diamond use to be the hardest known natural substance now it is the mineral lonsdaleite at 58% stronger then diamond is the first the second hardest is wurtzite boron nitride at 18% stronger then diamonds they are both extreamly rare natural minerals sources http://www.newscientist.com/article/dn16610-diamond-no-longer-natures-hardest-material.html
Diamonds are the hardest known substance
Diamond. a very hard material that is the hardest substance ever, or at least discover to be the hardest substance on EARTH THAT IS
One possibility is the word diamond. Diamonds are the hardest substance in the world.
diamond
The hardest naturally occurring substance is called diamond. It is a form of carbon.
The second hardest substance in the world is mineral lonsdaleite, or hexagonal diamond. It's made up from the same materials as diamonds, but it has a slightly different structor. Mineral lonsdaleite is extremely rare in nature.
The hardest substance in the human body is tooth enamel.The enamel that coats your teeth is the hardest substance in the human body.enamel of your teeth?