The second hardest

Mossanite is the second hardest natural substance after Diamond.

10 thoughts on “The second hardest”

  1. Sorry – The fact you have just entered is erroneous and follacious. The second hardest substance which was current is cubic boron-nitride. However, this is not so anymore. A new ‘bulk’ has been created and is slightly harder then this substance. It has been nicknamed BAM. This new material was developed by introducing a small amount of silicon and other additives to an alloy of boron, aluminum and magnesium.

  2. ummmm – He said NATURAL substance, if BAM were to be the second hardest it would be man-made, as for cubic boron-nitride I’m not sure if that’s man-made or not. I’ll look into it.

  3. I don’t thinks so… – I’m pretty sure the second hardest substance is granite. It’s chemical structure is very similer to diamond, in that each molecule bonds with three other molecules. This gives it very strong layers, but is has very weak bonds between the layers while diamond doesn’t have layers, so it’s just strong all around with no weak points. That’s why diamond tipped tools are always used to cut granite, because regular saws are too weak. I just watched a video about this in science class.

  4. I’m pretty sure he’s right – Granite is only a 6-7 on the Mohs scale(which is harder than steel) and is made of many different minerals unlike diamond which is a pure substance. Moissanite is made of silicon carbide(which if you know sandpaper should sound familiar). Most Moissanite is created artificially but it was first found in meteorites. At a hardness of 9.25 it is, as was said, the second hardest NATURAL substance.

  5. Yes – You can scratch a diamond with another diamond. A perfect diamond can ONLY be scratched by another diamond, but a diamond with imperfections can be chissled along these flaws without using a diamond-tipped tool.

Leave a Reply