About
Chiseled blocks allow you to make a beacon that doesn't emit a beam.
Explanation
Chiseled blocks are made by placing the corresponding block (diamond, emerald, gold, or netherite) into a stonecutter.
Warning: Once a block has been chiseled, it can't be un-chiseled or crafted back into nine diamonds/emeralds/ingots. Make sure you really want to chisel your netherite blocks before you do so!
Also, note that beacons do still need sky access even if they're not emitting a visible beam.
You only need one chiseled block in the top layer to create a beacon without a beam.