Ring mould

Ring Mould is a free-to-play item on the OSRS Grand Exchange in the other category.

In-game examine text: "Used to make rings."

It has a Grand Exchange buy limit of 40 every four hours, a high alchemy value of 3 gp, and item ID 1592.

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Ring Mould shows an active flip setup with a margin of +19 gp and 1,152 trades over the last 24 hours.

At the buy limit of 40 every four hours, max profit per cycle is about 760 gp — high margin with healthy liquidity.