the.com/obsidianite
a mineral so rare and contested half of geology isn't sure it exists.
naming disputeDiscredited by some authorities as poorly defined
volcanic kinLinked to obsidian, the natural volcanic glass
glass rootsObsidian forms when lava cools too fast to crystallize
sharper than steelObsidian blades cut finer than surgical scalpels
name originFrom Romans who found obsidian in Ethiopia