[Flag_This]

"And it comes of ridiculously sharp. I sliced inside the legs and down the belly faster than any knife ever did."

A quote you might find interesting:

"Good quality obsidian fractures down to single molecules which can produce a cutting edge 500 times sharper than the sharpest steel scalpel blade ("American Medical News", Nov. 2, 1984:21)."

[eartrumpet]

Yep, that’s why they have used obsidian for eye surgery.