Black tourmaline core
If you bought your full buy limit on Black tourmaline core right now, you'd clear roughly 382.5K GP after the 2% GE tax. That's the ceiling. The actual margin shifts every few minutes, especially after Wednesday updates and weekend supply spikes.
The blackened heart of the Grotesque Guardians. Members-only on the GE. Buy limit 5 per 4 hours. A 2% Grand Exchange tax applies to sales, capped at 5,000,000 GP per item.
How Black tourmaline core trades on the Grand Exchange
A tight buy limit means each cycle turns over few units, so the margin per unit is doing all the work. Because it is members-only, it is only visible on the Grand Exchange for P2P accounts.
Live flip margin
Don't miss the next move on Black tourmaline core
The margin can swing 30% within an hour after an OSRS update or a weekend supply shift. Set a price alert in GE IQ and you'll get pinged the second it crosses your target, no manual checking needed.
Set up an alert for Black tourmaline core →4,500+ items tracked live · 100% free · No signup
GE IQ is a single-page tool that grades every OSRS flip in real time. Built by a flipper, for flippers. Black tourmaline core is one of thousands you can track, alert on, and stack in your portfolio.
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