From Starbounder - Starbound Wiki
Ledge Brick is an object unobtainable by players through normal means. This item's information is present in the game files, but not intended by developers to be in players' possession.
|Floran :||Carved stone brickss.|
|Glitch :||Delighted. This stone has a small carved ledge.|
|Novakid :||Some mighty old lookin' bricks.|