# Rough Blue Crystal

**Item ID**: 4411
**Type**: Resource
**Grade**: White
**Weight**: 0.3 LT
**NPC Buy**: 1,230 silver
**NPC Sell**: 410 silver
**Marketable**: yes

## Flavor

A natural resource used in Processing. You have to be quite skilled to mine Rough Blue Crystals.


## Usage

Blue Crystal, House Crafting, etc.




## Obtain

Gathering (Yalt Canyon, Gahaz Bandits' Lair), Exploration Node - Mining


## Used in Exchanges

Consumed by 28 exchange recipes. Top 17 by quantity:

- [Trace of the Earth](/item/5954.md) — ×200 _(Cotton Cultivation)_
- [Trace of Nature](/item/5960.md) — ×180 _(Cotton Cultivation)_
- [Trace of Hunting](/item/5959.md) — ×170 _(Cotton Cultivation)_
- [Trace of Battle](/item/5958.md) — ×110 _(Cotton Cultivation)_
- [Rock Salt Ingot](/item/5806.md) — ×100 _(Cotton Cultivation)_
- [Ruddy Manganese Nodule](/item/5807.md) — ×100 _(Cotton Cultivation)_
- [Trace of Ascension](/item/5955.md) — ×100 _(Cotton Cultivation)_
- [Trace of Wave](/item/5953.md) — ×80 _(Cotton Cultivation)_
- [Trace of Savagery](/item/5956.md) — ×70 _(Cotton Cultivation)_
- [Trace of Despair](/item/5952.md) — ×50 _(Cotton Cultivation)_
- [Trace of Origin](/item/5957.md) — ×50 _(Cotton Cultivation)_
- [Khan's Tendon](/item/5808.md) — ×200
- [Cox Pirates' Artifact (Parley Expert)](/item/5823.md) — ×150
- [Note Full of Happiness](/item/5866.md) — ×50
- [Professional's Satisfying Dinner Meal](/item/5868.md) — ×30
- [Delphad Castillion's Carnage Weapon Box](/item/44960.md) — ×12
- [Marine Romance Outfit Box](/item/44954.md) — ×7