Unknown Smithing Stone

Guild Castle Facility Building Material
A mysterious smithing stone with unknown qualities, and a necessary part of facility crafting.
Obtained as a low-chance monster drop. During Guild Castle decoration/room blueprint quests, you can donate these to Benedict in the Guild Castle.
Guild Castle facility materials are removed every Monday at 12:00 AM.
Facility materials are removed from your inventory upon leaving a guild/getting kicked, or upon completing/canceling a blueprint.