Theostones are one of Aion 2’s most misunderstood upgrades. They don’t boost your stats directly, but they add a chance-based effect to your attacks, such as bleeds or area damage. Here’s how to farm them and put them to work.
Table of Contents
Theostones in Aion 2 : Overview
| Detail | What You Need to Know |
|---|---|
| What they do | Add an on-hit proc effect to your gear |
| Where to engrave | Enhancement menu (Enhancement Hub) |
| Engraving cost | 10,000 Kina |
| Rarities | Rare, Epic and Unique |
| Combine requirement | At least 4 Theostones |
| Best suited to | Mainly PvP builds |
How to Get Theostones
Theostones are mostly a late-game reward, so aim for around level 45 before you start farming seriously. These are the main routes:
- Regional quests: Three quests, A Traitor Within, Restless Spirit and Regular Altar Maintenance, reward a Rare Theostone Chest with one random stone.
- PvP shops: Abyss, Arena and Battlefield activities earn Abyss Points, which you can spend on the same Rare chest.
- Hidden Cubes: Cubes scattered around the open world can hold Theostones, so explore as you go.
- Transcendence Dungeons: Clearing these can drop higher-rarity stones.

How to Use a Theostone
- Open the Enhancement Hub.
- Select an eligible weapon (some guides also say guards).
- Pick the Theostone you want.
- Choose Engrave and pay 10,000 Kina.
If you get a Theostone as an item, use it first. It moves into your Enhancement menu.
Combining for Higher Rarity
You can’t farm higher rarities directly. Instead, combine four Theostones for a chance at the next tier up. Rare stones can become Epic, and Epic stones can become Unique. Treat it as a gamble rather than a sure thing, as odds are reportedly low, with one guide putting the Epic-to-Unique chance at around 9%.
Smart Tips Before You Engrave
- Don’t double up. If you engrave two identical Theostones, only one effect applies.
- Expect small gains. Some guides estimate Theostones add under 1% to total damage, so pick the proc you enjoy.
- Keep your Kina. Engraving costs gold, so don’t swap constantly.
- Mind your gear. Engraved Theostones are reportedly lost when you transfer equipment.
New to the series? Here’s some background on the Aion video game on Wikipedia.
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FAQs
1. Where do I engrave Theostones in Aion 2?
Use the Enhancement Hub, choose your gear, select the Theostone and hit Engrave for 10,000 Kina.
2. Can I get Unique Theostones directly?
Not as far as anyone has found. The only known route is combining four Epic stones for a chance at Unique.