Can we talk about how everyone says obsidian is always black?

I was reading a field guide from the Arizona Geological Survey and learned some obsidian can be green or even red due to trace elements. Has anyone here ever found a colored piece?

2 comments

2 Comments

the_luna20d ago

Yeah, the whole 'obsidian is always black' thing is such a basic take. It's like people only know the stuff from video games or something. I've seen pictures of that rainbow sheen obsidian and even some that looks kinda rusty red. Makes you wonder what else they got wrong in those old textbooks, lol.

craig.reese20d ago

True, but most obsidian you find is still just black glass. The colorful kinds are pretty rare in the real world. Maybe the old books were just talking about the common stuff.