Granite boots

Granite Boots is a members-only item on the OSRS Grand Exchange in the armour category.

In-game examine text: "These will protect my feet, but are a bit heavy."

It has a Grand Exchange buy limit of 70 every four hours, a high alchemy value of 7.5k gp, and item ID 21643.

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Granite Boots shows an active flip setup with a margin of +11.4k gp and 560 trades over the last 24 hours.

At the buy limit of 70 every four hours, max profit per cycle is about 794.9k gp — high margin with healthy liquidity.