Talk:Earthbending/@comment-3145494-20101228182827/@comment-4342428-20101231130524

Turn coal into diamonds? That alone is almost impossible as you'll need enormous amounts of heat and pressure, even 50 earthbenders can't supply the minimum pressure required. How much pressure? I actually saw this episode of mythbusters where they show how they make industrial diamonds by stuffing small amounts of graphite (if i'm not mistaken) into explosives equivalent to around 20 sticks of dynamite(which provides the pressure and heat). And after the blast, the amount of diamonds are so minute that it can barely be seen. The entire coal couldn't turn into diamond, just the carbon inside of it, which is very little.

The only glass i remember seeing in ATLA is in The Painted Lady, where katara destroys the factory by crashing huge amounts of water through the glass windows. The avatar wiki forums is a great place for these discussions, and there's one about glassbending too!

http://forums.avatarwiki.org/viewtopic.php?f=6&t=369