Stone display signs

[jordancoles]

Currently we have wooden display signs for organizing our stockpiles, but boards are hard to come by in a mine.
It would be nice if we could get a stone display sign which would function in the same way as its wooden counterpart

This would help for marking ore or stone stockpiles or to mark high q glimmer/cavebulb/stalagoom spawns without needing to return to the surface regularly

[Granger]

You could use paving for markings, or once go through the trouble to bring a bull with a packrack and two wheelbarrows (filled with board stockpiles).