Tuff

Tuff is a porous volcanic rock, found as part of amethyst geodes.

Breaking
Tuff drops as an item if mined by any pickaxe. If mined without a pickaxe, it drops nothing.

Natural generation
Tuff generates naturally as part of the outer layer of amethyst geodes.

Usage
Tuff is currently used only for decoration.

Issues
Tuffstein Tuff Tuf Tufo Туф 凝灰岩