Mossy Stone Bricks are a decorative variant of stone bricks, often used for aesthetic and structural purposes. They generate naturally in structures such as strongholds, igloo basements, ocean ruins, and ruined portals. Mossy Stone Bricks can be mined using any pickaxe. If mined without a pickaxe, they drop nothing.

They can be obtained by crafting with stone bricks and vines or moss blocks. Mossy Stone Bricks can also be crafted into slabs, stairs, and walls. Additionally, they can be placed under note blocks to produce a bass drum sound.

Silverfish have the ability to infest Mossy Stone Bricks, creating infested mossy stone brick. When mined or triggered, these blocks release silverfish, making them a potential hazard in strongholds and other generated structures.