Obsidian helmet

Obsidian Helmet is a members-only item on the OSRS Grand Exchange in the armour category.

In-game examine text: "Provides excellent protection."

It has a Grand Exchange buy limit of 70 every four hours, a high alchemy value of 33.8k gp, and item ID 21298.

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Obsidian Helmet shows an active flip setup with a margin of +19.2k gp and 591 trades over the last 24 hours.

At the buy limit of 70 every four hours, max profit per cycle is about 1.34m gp — high margin with healthy liquidity.