Talk:Cinder Fall/@comment-175.156.17.14-20150211093426/@comment-4010415-20150211095732

Ruby did not "destroy" Cinder's glass. That's not the glass Ruby was talking about. The swords Cinder used were glass. They were black glass, like obsidian.

Obsidian is a volcanic black glass that is formed after volcanic eruptions. They're one of the biggest reasons I think Cinder uses lava Dust, rather than fire Dust. That, and the fact that, in Volume 1 Episode 1, when Glynda blocked Cinder's first attack, it splattered onto the ground as if it was liquid, rather than fire.