Blue moon helm

Blue Moon Helm is a members-only item on the OSRS Grand Exchange in the armour category.

In-game examine text: "The helm of the Blue Moon."

It has a Grand Exchange buy limit of 15 every four hours, a high alchemy value of 61.8k gp, and item ID 29019.

View on OSRS Wiki

Blue Moon Helm shows an active flip setup with a margin of +45.1k gp and 596 trades over the last 24 hours.

At the buy limit of 15 every four hours, max profit per cycle is about 675.9k gp — high margin with healthy liquidity.