Allagan Tomestone of Causality
“Though they appear to be naught more than simple stones, Garlond Ironworks engineers insist they contain reams of invaluable information on the nature of cause and effect gathered by the lost Allagan Empire.
— In-game description

Allagan Tomestone of Causality was a type of Allagan Tomestone introduced in patch 6.2. They dropped from level 90 dungeons, trials or raids. They could not drop before the player's class is at level 90. You could not spend them before completing Endwalker.
Allagan Tomestones of Causality were discontinued in Patch 7.0 with the launch of Dawntrail. They could have been exchanged with Auriana in Revenant's Toll (X:22.7 Y:6.7) for Allagan Tomestone of Poetics until Patch 7.2, when they were removed entirely.
- Players could carry a maximum of 2,000 Allagan Tomestones of Causality.
- Players could only receive Allagan Tomestones of Causality after reaching level 90 with at least one class or job.
- Speak with Cihanti in Radz-at-Han (X:10.8 Y:10.4) to exchange Allagan Tomestones of Causality.
- Speak with Khaldeen in Radz-at-Han (X:10.8 Y:10.4) to enhance gear received in exchange for Allagan Tomestones of Causality.
Uses
Allagan Tomestone of Causality are used to purchase Item Level 620 gear in Radz-at-Han. They can be used to purchase:
Others
| Item | Type | Price |
|---|---|---|
| Manderium Meteorite | Miscellany | |
| Complementary Chondrite | Miscellany | |
| Amplifying Achondrite | Miscellany | |
| Crucible Rain | Other | |
| Dharmic Rain | Other | |
| Divine Rain | Other | |
| Thavnairian Almandine | Stone | |
| Vanadinite | Stone | |
| Alchemical Abrasive | Stone | |
| Hannish Cotton | Cloth | |
| Palebloom Kudzu Cloth | Cloth | |
| Thavnairian Thread | Cloth | |
| Deinosuchus Skin | Leather | |
| Titanoboa Skin | Leather | |
| Amynodon Hide | Leather | |
| Liquid Glass | Reagent | |
| Thavnairian Flux | Reagent | |
| Grinding Fluid | Reagent | |
| Alche-mist | Reagent | |
| Hannish Varnish | Reagent | |
| Palaka Mistletoe | Reagent | |
| Thavnairian Horsetail | Reagent | |
| Alchemical Charcoal | Reagent |