Obsidian English Gemstone Fu/Fme

Obsidian — The Oath of Blackglass

Born from lava that cooled too fast to become stone, obsidian is volcanic glass—a material that looks like night, but carries the memory of fire.
In gemstone lore, obsidian is often framed as a guardian stone: boundaries, protection, and facing hard truths. It’s the kind of gem people associate with closing doors behind you and choosing a path you won’t apologize for.

In a D&D world, obsidian is what you find in collapsed summoning chambers, Shadowfell shrines, or the black mirrors used to contact something that shouldn’t answer. An obsidian set feels like a pact token: quiet, heavy, decisive—made for characters who thrive in darkness, not because they love it… but because they understand it.

Perfect vibe for: Warlocks, Oathbound Paladins, Shadow magic, cursed relic builds
Store line: “Blackglass born of fire—roll like you’ve already paid the price.”