[Arkcon]

And steel is mostly iron.. I think I finally understand lol. This is completely of topic but I dont want to make a whole new thread for a simple question. I have looked on google and cant find and answer. At what tempreture do diamonds melt at? and once there melted what are the transported in?

You are making the same mistake you've made before, expecting a very simple answer, to a very difficult problem.  A similar question was asked before, look here:

http://www.chemicalforums.com/index.php?topic=27366.msg111260#msg111260

[uperkurk]

I understand that once something like that melts it will harden again, he was asking how to make it stay as liquid. I dont know the exact tempreture but lets just say if I place some steel or iron into a furnace it would melt. At anypoint if I put a diamond in that furnace, even a furnace that it heated to say 5000 degrees. Would it melt or not?

[Arkcon]

No.  Some things don't melt no matter how hot they get.  For example, CO₂ and I₂ sublime, go straight to the gas phase, unless under pressure.  Also some things decompose when heated, like wood, this is also what happens to diamond, it becomes a vapor of C atoms, as was described in the forum post I linked to, and the quote from wikipedia azmanam: included.

[nj_bartel]

Melting diamonds is sort of a misnomer at any rate - a diamond is separated from graphite is separated from buckminsterfullerenes by how the carbons bond to one another.  If it's in a liquid, these bonds disappear, and who's to say how they will reform.

[uperkurk]

Ok, using wood was a good example It dont melt it just burns. I didnt think of that, because I look at diamond as a type of rock I thought it would melt like concrete turns to lava.. ok thanks for all the help I was proberbly getting on your nerves asking so many questions lol. Thanks again.

[Arkcon]

Ok, using wood was a good example It dont melt it just burns.

Aha.  See, I never mentioned that -- because if I'd said it burns, you'd have just said, "What if there was no air?", then we'd get into a discussion on destructive distillation, and other oxidizing agents besides the oxygen in air, to prolong the discussion.

[uperkurk]

lol I think I have all the answers I was looking for lol, I dont have a clue what your talking about so i'll just leave the convo here. Thanks