Fisch · Fish
Unstable Crystal
“A crackling, energy-dense crystal lattice that vibrates with raw cosmic power.”— in-game Bestiary description
Fish stats
Avg. sell value
C$4,500
C$ / kg
3,000
Weight range
1 kg – 2 kg
avg 1.5 kg
Base XP
15,000
By average value, Unstable Crystal ranks #29 of 34 Secret fish with a listed price.
Where and when to catch Unstable Crystal
- Location
- Astral Observatory
- Preferred bait
- Magnet
- Time of day
- —
- Weather
- Rain
- Season
- Winter
Unstable Crystal guide
Rain and Winter are the conditions the wiki attaches to the Unstable Crystal, a Secret fish listed for Astral Observatory with Magnet as the bait. The time of day is not listed, and the entry is marked as obtainable.
The crystal is tiny, weighing between 1.0 kg and 2.0 kg with an average of 1.5 kg, yet it is priced at C$3,000 per kg. That produces an average sale value of C$4,500 and a base XP of 15,000. By maximum weight it ranks 883rd of 1,059 documented fish, but by average value it is 243rd of 1,038, a gap of 640 places between the two ranks.
Astral Observatory documents 35 fish in total, and four others share the Secret rarity there: Singularity Control Unit, Stabilizer Core, Stellar Wiring and Umbral Matrix. The quote describes “A crackling, energy-dense crystal lattice that vibrates with raw cosmic power.”
Verdict: a featherweight entry whose value is all in the price per kg, so judge it by its sale value and XP, not by its size.
Average value × mutation multiplier
Unstable Crystal value with mutations
| Mutation | Multiplier | Estimated value |
|---|---|---|
| Albino | ×1.2 | C$5,400 |
| Aether | ×15 | C$67,500 |
| Ascended | ×12 | C$54,000 |
| Darkheart | ×11.8 | C$53,100 |
| Hades' Curse | ×11.1 | C$49,950 |
| Golden Part | ×11 | C$49,500 |
| Hadal | ×11 | C$49,500 |
Estimate = the wiki's average value × the mutation's listed multiplier. The real price also depends on the weight you land. All mutations
More fish at Astral Observatory
- Singularity Control UnitSecretC$5,600
- Stabilizer CoreSecretC$4,167
- Stellar WiringSecretC$3,850
- Umbral MatrixSecretC$4,875
- Frozen GlassExoticC$6,283
- Hardened GlassExoticC$6,021
- Quartz GlassExoticC$6,133
- Seasonal GlassExoticC$6,600
- Starfall GlassExoticC$6,429
- Aurora GarMythicalC$2,500
- Boreal Man o' WarMythicalC$2,875
- Comb JellyMythicalC$2,800
Data sourced from the Fisch Wiki (CC BY-SA) and processed automatically; not tested in the game; last synced 2026-10-25.