Gemstone
How to get it
Hunt in the Fungal Cavern
From openables
Chests, baskets, and other items that can contain this.
Fungal Cavern Treasure Chest
Rare Fungal Cavern Treasure Chest
Unstable Crystal
Orange Winter Hunt Gift Box
Cave Gemstone Egg
Unstable Crystal Egg
Ronza's Fungal Supply Ship
Royal Loot Crate
Rare Cerulean Skyport Treasure Chest- Orange Winter Hunt Gift Box (pre 2020)
- Royal Loot Crate (Retired 2020)
- Royal Loot Crate (2020-2025)
- Royal Loot Crate (2025-2026)
Hunting drops
The mice that drop it and how often, from MHCT. Rates are crowdsourced — check the sample size before trusting one.
| Mouse | Location | Qty | Drop rate | Sample |
|---|---|---|---|---|
| Stalagmite Mouse | Fungal Cavern | 1 | 100% | 474 catches |
| Crystal Cave Worm Mouse | Fungal Cavern | 1–2 | 100% | 222 catches |
| Crystalback Mouse | Fungal Cavern | 1 | 52.99% | 853 catches |
| Crystal Controller Mouse | Fungal Cavern | 1 | 51.96% | 893 catches |
| Battle Cleric Mouse | Cerulean Skyport | 1–3 | 11.51% | 391 catches |
| Ethereal Guardian Mouse | Cerulean Skyport | 1–3 | 9.04% | 387 catches |
| Exo-Tech Mouse | Cerulean Skyport | 1–3 | 7.26% | 372 catches |
| Retired Minotaur Mouse | Zokor | 20 | 5.42% | 1,015 catches |
| Gemstone Worshipper Mouse | Fungal Cavern | 1 | 2.88% | 139 catches |
| Splintered Stone Sentry Mouse | Fungal Cavern | 1 | 2.8% | 250 catches |
| Shattered Obsidian Mouse | Fungal Cavern | 1 | 1.97% | 305 catches |
| Captain Crook | Cerulean Skyport | 1–3 | 0.89% | 19,462 catches |
About this item
Precious and valuable stones found deep within the Fungal Cavern. The shine of these Gemstones is truly outrageous. Truly, truly, truly outrageous!
This precious stone is used to create Gemstone Cheese, used to track down the powerful mice that drop Diamonds as loot!
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Arcanevine
Barnacle
Bottled-Up Rage
Brined Curd
Burroughs Salmon
Cavern Fungus
Cheddar Powder