Molten glass

Molten Glass is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "Hot glass ready to be blown into useful objects."

It has a Grand Exchange buy limit of 13,000 every four hours, a high alchemy value of 1 gp, and item ID 1775.

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Molten Glass shows an active flip setup with a margin of +3 gp and 2,471,529 trades over the last 24 hours.

At the buy limit of 13,000 every four hours, max profit per cycle is about 39.0k gp — high margin with healthy liquidity.