When a piston breaks a block, the item will drop. To ensure you don't lose any resources, you need a reliable collection system.

This design works best if you have installed along with Create or any mod that provides auto-harvesters. Materials Needed Corundum Base Blocks (any color) Pistons (for harvesting) Redstone Clock or Observer Hoppers & Chests Building blocks Step-by-Step Construction

Place an Observer on top of the piston, facing the crystal path.

If you want to move your farm to the surface or your main base, you use a Silk Touch pickaxe to harvest the Clusters. Breaking a Cluster with a regular pickaxe only drops shards, which cannot be used for farming. 2. Biome and Depth

Ensure you are using the correct tools if you manually harvest. Regular pickaxes work, but using Silk Touch is the safest way to move your seed blocks around without shattering them.

Applying Bonemeal to a base Corundum block rapidly accelerates the growth of side crystals.

Automate the generation, collection, and processing of Corundum (all colors: red, orange, yellow, green, blue, indigo, violet, white, black).

Cave Crystal placed 1 block above basalt, off to the side.