Boron nitride
Diamond is an allotrope of Carbon and is the hardest known form of Carbon.
Diamond is the hardest mineral, scoring a perfect 10 on the Mohs scale of mineral hardness.
The hardest thing to melt is diamond, which requires extremely high temperatures of around 6,000 degrees Fahrenheit to melt.
Diamonds are the HARDEST natural material. Mankind has created harder artificial materials.
No. Diamond is the hardest mineral and it is not malleable or plastic.
For example rhenium diboride (ReB2).
Diamond is the hardest materail in the world
It is here a great confusion ! The rhenium diboride (ReB2) is supposed to be the hardest material today - but this assumption also is not generally accepted/confirmed.
diamonds are the hardest
Diamonds are the hardest mineral and the agate is the secod hardest mineral.
From what I hear, One is the hardest & Master of Puppets is second hardest.
Diamond is the hardest precious stone
the hardest i can think of is "What is the answer to this question?"
Expert is the hardest.
Madagascar is the hardest to fake.
yes.
The hardest substance in a rock would be the hardest mineral of which the rock is composed.