# Processed Chaos Stone (Weapon) item

> Processed Chaos Stone (Weapon): Contained in. Express Lv. 1,540 Achievement Chest, Express Lv. 1,570 Achievement Chest

Canonical: https://lostark.wiki/database/items/processed-chaos-stone-weapon-41611208?relation=containers

*Relic*

A mysterious stone that can be found in areas corrupted by chaos. It is said that it has the power to bring out the true nature of anything it touches.  
Can only be used with weapon quality upgrades and does not consume gold.  
It will be consumed before any Chaos Stone items you own.  
Character-bound storage items are consumed first, followed by Roster-bound storage items.

It comes out of [Express Lv. 1,540 Achievement Chest](https://lostark.wiki/database/items/express-lv-1-540-achievement-chest-61301660) and [Express Lv. 1,570 Achievement Chest](https://lostark.wiki/database/items/express-lv-1-570-achievement-chest-61301690).

## Facts

- **Tier**: 3
- **Shop sale**: Not for sale
- **Binding**: Bind on pickup

## Acquisition & uses

- [Events](https://lostark.wiki/database/items/processed-chaos-stone-weapon-41611208#relationships) (1)
- [Contained in](https://lostark.wiki/database/items/processed-chaos-stone-weapon-41611208?relation=containers#relationships) (2)

### Contained in

1–2 of 2

| Name | Quantity | Details |
| --- | --- | --- |
| [Express Lv. 1,540 Achievement Chest](https://lostark.wiki/database/items/express-lv-1-540-achievement-chest-61301660) | 10 | Obtain all of the following items.; Quantity 10 |
| [Express Lv. 1,570 Achievement Chest](https://lostark.wiki/database/items/express-lv-1-570-achievement-chest-61301690) | 10 | Obtain all of the following items.; Quantity 10 |

## Related

- [Home](https://lostark.wiki/)
- [Items](https://lostark.wiki/database/items)
- [Materials](https://lostark.wiki/database/items/category/materials)