The only biome containing Quark Corundum is the . Specifically, you are looking for the Radial Fissures and the Quantum Drift sub-zones.
Arrange basalt blocks in a line. Corundum grows on of basalt only. quark corundum farm
While not a "farm" in the traditional sense, never skip your three daily Arena attempts at Master Rank. The participation chest has a low (approx. 3-5%) chance to drop Quark Corundum. It’s a passive income source for when you lack stamina. The only biome containing Quark Corundum is the