: Valid growth locations are indicated by sparkling particles emitting from the block. If you wax the block, it will stop emitting particles and will no longer grow.
Do you have other mods installed (like or Industrial Foregoing ) that could help automate the breaking process? quark corundum farm
If you do not need the full blocks and just want shards for crafting or trading, use a Fortune III pickaxe on the grown crystals. : Valid growth locations are indicated by sparkling
Place regular facing horizontally into the space precisely one block above the corundum base tier. This configuration allows you to cleanly shear off the grown crystal clusters without accidentally shifting or breaking your valuable base blocks. Redstone Clock Integration If you do not need the full blocks
Corundum emits a faint light, making it stand out in dark ravines.