Aether catalyst

Aether Catalyst is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "A piece of the cosmos' soul? Or souls belonging to the cosmos?"

It has a Grand Exchange buy limit of 25,000 every four hours, a high alchemy value of 120 gp, and item ID 30771.

View on OSRS Wiki

Aether Catalyst shows an active flip setup with a margin of +4 gp and 3,903,713 trades over the last 24 hours.

At the buy limit of 25,000 every four hours, max profit per cycle is about 100.0k gp — high margin with healthy liquidity.