The blackened heart of the Grotesque Guardians.
642.9k gp
Updated 24m ago
Black tourmaline core is currently trading at 642.9k gp on the Grand Exchange and is down 0.6% over the last 24 hours. Current instant-buy and instant-sell prices are 621.0k gp and 664.8k gp.
Category: ores · Members only · View on OSRS Wiki
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Black Tourmaline Core is a members-only item on the OSRS Grand Exchange in the ores category.
In-game examine text: "The blackened heart of the Grotesque Guardians."
It has a Grand Exchange buy limit of 5 every four hours, a high alchemy value of 24.9k gp, and item ID 21730.
Margin: 30.5k gp per flip
Volume: 452 trades / 24h
Buy limit: 5 every 4 hours
Max profit/cycle: 152.6k gp
Verdict: High margin with healthy liquidity
Black Tourmaline Core shows an active flip setup with a margin of +30.5k gp and 452 trades over the last 24 hours.
At the buy limit of 5 every four hours, max profit per cycle is about 152.6k gp — high margin with healthy liquidity.
| Time | Buy avg | Buy vol | Sell avg | Sell vol | Margin |
|---|---|---|---|---|---|
| 24m ago(8/8/2026) | — | – | 664.8k | 2 | – |
| 54m ago(8/8/2026) | 621.0k | 2 | — | – | – |
| 1h ago(8/8/2026) | — | – | 694.9k | 1 | – |
| 1h ago(8/8/2026) | 621.0k |
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| 1 |
| — |
| – |
| – |
| 1h ago(8/8/2026) | — | – | 694.9k | 1 | – |
| 1h ago(8/8/2026) | 621.0k | 1 | — | – | – |
| 1h ago(8/8/2026) | 621.0k | 1 | 681.0k | 1 | 60.0k |
| 2h ago(8/8/2026) | 622.0k | 2 | — | – | – |
| 2h ago(8/8/2026) | 622.0k | 4 | — | – | – |
| 2h ago(8/8/2026) | 622.0k | 1 | — | – | – |
| 2h ago(8/8/2026) | 622.0k | 1 | — | – | – |
| 3h ago(8/8/2026) | 621.0k | 1 | — | – | – |
| 3h ago(8/8/2026) | 621.0k | 1 | — | – | – |
| 3h ago(8/8/2026) | 621.0k | 1 | — | – | – |
| 3h ago(8/8/2026) | 616.0k | 1 | — | – | – |
| 4h ago(8/8/2026) | — | – | 610.6k | 5 | – |
| 4h ago(8/8/2026) | — | – | 600.0k | 1 | – |
| 4h ago(8/8/2026) | 598.0k | 1 | — | – | – |
| 4h ago(8/8/2026) | 598.0k | 1 | — | – | – |
| 4h ago(8/8/2026) | 610.0k | 6 | — | – | – |
| 4h ago(8/8/2026) | 610.0k | 2 | — | – | – |
| 5h ago(8/8/2026) | — | – | 590.0k | 2 | – |
| 5h ago(8/8/2026) | 528.7k | 1 | — | – | – |
| 5h ago(8/8/2026) | 528.7k | 1 | — | – | – |
| 5h ago(8/8/2026) | 600.0k | 1 | — | – | – |
| 5h ago(8/8/2026) | 600.0k | 1 | — | – | – |
| 5h ago(8/8/2026) | 600.0k | 1 | 598.3k | 2 | 0 |
| 5h ago(8/8/2026) | 531.3k | 2 | — | – | – |
| 6h ago(8/8/2026) | 528.7k | 1 | — | – | – |
| 6h ago(8/7/2026) | 551.0k | 1 | 570.0k | 1 | 19.0k |
| 7h ago(8/7/2026) | 551.0k | 1 | — | – | – |
| 7h ago(8/7/2026) | 568.6k | 2 | — | – | – |
| 7h ago(8/7/2026) | 528.7k | 2 | — | – | – |
| 7h ago(8/7/2026) | — | – | 550.0k | 1 | – |
| 7h ago(8/7/2026) | 525.0k | 2 | — | – | – |
| 7h ago(8/7/2026) | 501.6k | 2 | — | – | – |
| 7h ago(8/7/2026) | 613.0k | 2 | 615.0k | 1 | 2.0k |
| 8h ago(8/7/2026) | — | – | 615.0k | 2 | – |
| 8h ago(8/7/2026) | — | – | 615.0k | 2 | – |
| 8h ago(8/7/2026) | 611.0k | 1 | — | – | – |
| 8h ago(8/7/2026) | — | – | 600.5k | 4 | – |
| 8h ago(8/7/2026) | 600.0k | 1 | — | – | – |
| 9h ago(8/7/2026) | — | – | 623.6k | 2 | – |
| 9h ago(8/7/2026) | 601.3k | 3 | — | – | – |
| 10h ago(8/7/2026) | 608.0k | 3 | — | – | – |
| 10h ago(8/7/2026) | 605.0k | 5 | — | – | – |
| 10h ago(8/7/2026) | 606.0k | 2 | — | – | – |
| 10h ago(8/7/2026) | 606.0k | 2 | — | – | – |
| 11h ago(8/7/2026) | 606.0k | 2 | — | – | – |
| 11h ago(8/7/2026) | 606.0k | 2 | — | – | – |
| 11h ago(8/7/2026) | 606.0k | 2 | — | – | – |
| 11h ago(8/7/2026) | 625.5k | 2 | — | – | – |
| 12h ago(8/7/2026) | 606.0k | 1 | — | – | – |
| 12h ago(8/7/2026) | 652.0k | 3 | — | – | – |
| 12h ago(8/7/2026) | 675.0k | 1 | — | – | – |
| 12h ago(8/7/2026) | 675.0k | 1 | — | – | – |
| 13h ago(8/7/2026) | 604.0k | 1 | 640.9k | 2 | 37.0k |
| 13h ago(8/7/2026) | 604.0k | 1 | — | – | – |
| 13h ago(8/7/2026) | 604.0k | 1 | — | – | – |
| 14h ago(8/7/2026) | 604.0k | 2 | — | – | – |
| 14h ago(8/7/2026) | 600.0k | 1 | — | – | – |
| 15h ago(8/7/2026) | 675.0k | 2 | — | – | – |
| 15h ago(8/7/2026) | 675.0k | 1 | — | – | – |
| 16h ago(8/7/2026) | — | – | 694.9k | 1 | – |
| 16h ago(8/7/2026) | 675.0k | 1 | — | – | – |
| 17h ago(8/7/2026) | — | – | 660.1k | 1 | – |
| 17h ago(8/7/2026) | 675.0k | 1 | — | – | – |
| 18h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 18h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 18h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 19h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 19h ago(8/7/2026) | 675.0k | 1 | — | – | – |
| 19h ago(8/7/2026) | 675.0k | 1 | — | – | – |
| 20h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 20h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 21h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 23h ago(8/7/2026) | 696.0k | 2 | — | – | – |
| 23h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 23h ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 1d ago(8/7/2026) | 691.6k | 1 | — | – | – |
| 1d ago(8/7/2026) | 691.6k | 1 | — | – | – |
| 1d ago(8/7/2026) | 691.6k | 2 | — | – | – |
| 1d ago(8/7/2026) | — | – | 694.9k | 1 | – |
| 1d ago(8/7/2026) | — | – | 655.7k | 4 | – |
| 1d ago(8/7/2026) | 611.0k | 1 | — | – | – |
| 1d ago(8/7/2026) | 611.0k | 1 | — | – | – |
| 1d ago(8/7/2026) | 696.0k | 1 | — | – | – |
| 1d ago(8/7/2026) | 696.0k | 2 | — | – | – |
| 1d ago(8/7/2026) | — | – | 700.0k | 1 | – |
| 1d ago(8/7/2026) | — | – | 756.2k | 1 | – |
| 1d ago(8/7/2026) | — | – | 731.5k | 1 | – |
| 1d ago(8/7/2026) | — | – | 700.0k | 3 | – |
| 1d ago(8/7/2026) | 666.0k | 2 | — | – | – |
| 1d ago(8/7/2026) | — | – | 650.0k | 1 | – |
| 1d ago(8/7/2026) | 600.1k | 1 | — | – | – |
| 1d ago(8/7/2026) | 691.1k | 1 | — | – | – |
| 1d ago(8/7/2026) | — | – | 694.9k | 2 | – |
| 1d ago(8/7/2026) | — | – | 694.8k | 1 | – |
| 1d ago(8/6/2026) | — | – | 644.7k | 3 | – |
| 1d ago(8/6/2026) | 600.1k | 2 | — | – | – |
| 1d ago(8/6/2026) | 600.1k | 2 | — | – | – |
| 1d ago(8/6/2026) | — | – | 627.1k | 1 | – |
| 1d ago(8/6/2026) | 600.0k | 1 | 689.5k | 6 | 89.5k |
| 1d ago(8/6/2026) | 666.0k | 1 | — | – | – |
| 1d ago(8/6/2026) | 666.0k | 3 | — | – | – |
| 1d ago(8/6/2026) | 666.0k | 2 | — | – | – |
| 1d ago(8/6/2026) | 666.0k | 2 | — | – | – |
| 1d ago(8/6/2026) | 666.0k | 2 | — | – | – |
| 1d ago(8/6/2026) | 666.0k | 2 | — | – | – |
| 1d ago(8/6/2026) | — | – | 693.1k | 2 | – |
| 1d ago(8/6/2026) | 600.0k | 2 | — | – | – |
| 1d ago(8/6/2026) | 615.0k | 2 | — | – | – |
| 1d ago(8/6/2026) | 615.0k | 1 | — | – | – |
| 1d ago(8/6/2026) | 615.0k | 1 | — | – | – |
| 1d ago(8/6/2026) | 615.0k | 1 | — | – | – |
| 1d ago(8/6/2026) | — | – | 651.9k | 2 | – |
| 1d ago(8/6/2026) | 600.0k | 1 | — | – | – |
| 1d ago(8/6/2026) | — | – | 694.8k | 1 | – |
| 1d ago(8/6/2026) | 666.0k | 1 | — | – | – |
| 1d ago(8/6/2026) | 667.5k | 2 | — | – | – |
2.4k gp