Infested Chiseled Stone Brick are a variant of stone bricks that conceal silverfish, which emerge when the block is broken without Silk Touch. They have the same texture as regular chiseled stone bricks but take significantly less time to break. When a nearby silverfish is attacked, hidden silverfish in surrounding infested blocks emerge to swarm the player. Infested Chiseled Stone Brick cannot be obtained in item form and are only available through the Creative inventory or commands.

They generate naturally in igloo basements but do not appear in strongholds, unlike regular infested stone bricks.

When mined with any tool, except one enchanted with Silk Touch, an Infested Chiseled Stone Brick block releases a silverfish that immediately attacks. Infested blocks take half the time to break compared to their normal counterparts, making them distinguishable when mined. In Java Edition, they can also be identified using the debug screen. In Bedrock Edition, placing a note block on an Infested Chiseled Stone Brick block produces a flute sound, while regular chiseled stone bricks produce a bass drum sound.