For those confused about the title, there's a joke that every moderator has a "diamond hammer" (diamond from the little
♦ by the username). In a chat discussion, it was brought to my attention that a diamond can burn (which makes total sense because it's pure carbon) after I got a notification in orange in the topbar of SE.
Anyway my question is why can something so durable be able to burn? I would imagine that there would be a relationship between flammability and durability, especially since metal cannot burn.* Is it just a coincidence that most people think hard == inflammable? Why can diamond burn?
*It can burn when oxidized IIRC.