Quark Corundum Farm _verified_ Online

Y+2: Air (cluster grows here) Y+1: Budding Corundum Block (facing up) Y+0: Piston facing up + Redstone clock beneath Side: Water stream flowing into hopper line

: Corundum is a key ingredient for crafting Runes, which change the color of the "glow" on enchanted items. Beacon Coloring quark corundum farm

Small crystal clusters will also sprout on the sides and top of these grown blocks. Y+2: Air (cluster grows here) Y+1: Budding Corundum