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How to Make Crystalarium

Ingredients, unlock method, and spawn ID for Crystalarium.
Crystalarium

Insert a gem of your choice and it will grow copies.

Category
Big Craftables

The item ID for Crystalarium in Stardew Valley is: (BC)21

Crystalarium
[(BC)21]

Crystalarium Recipe

Crystalarium is a crafted item.

Ingredients

How to learn the recipe

Reach Mining Level 9

See all Stardew Valley recipes →

Crystalarium as a Bundle Reward

  • Complete the 25,000g bundle in the Vault to receive Crystalarium.

What the Crystalarium Produces

Everything the Crystalarium accepts and produces.

  • No input neededthe same item back (aged or duplicated)(≈3.1 days)

Crystalarium Villager Gift Reactions

Give Crystalarium as a gift to build friendship. Each villager reacts differently — pick someone who loves it for the biggest friendship boost. Gifts given on a villager's birthday count 8× — a loved gift jumps from +80 to +640 friendship.

  • NeutralAbigail🎂 Fall 13Alex🎂 Summer 13Caroline🎂 Winter 7Clint🎂 Winter 26Demetrius🎂 Summer 19Dwarf🎂 Summer 22Elliott🎂 Fall 5Emily🎂 Spring 27Evelyn🎂 Winter 20George🎂 Fall 24Gus🎂 Summer 8Haley🎂 Spring 14Harvey🎂 Winter 14Jas🎂 Summer 4Jodi🎂 Fall 11Kent🎂 Spring 4Krobus🎂 Winter 1Leah🎂 Winter 23Leo🎂 Summer 26Lewis🎂 Spring 7Linus🎂 Winter 3Marnie🎂 Fall 18Maru🎂 Summer 10Pam🎂 Spring 18Penny🎂 Fall 2Pierre🎂 Spring 26Robin🎂 Fall 21Sam🎂 Summer 17Sandy🎂 Fall 15Sebastian🎂 Winter 10Shane🎂 Spring 20Vincent🎂 Spring 10Willy🎂 Summer 24Wizard🎂 Winter 17
See the full Crystalarium gift guide →

Crystalarium Cheat Help

Crystalarium cannot be spawned by naming an animal or your character. The naming cheat only reads plain numeric item codes, and this item's code is [(BC)21] — inside a name the game ignores it completely, with no error and no item.

Spawn Using the Chat Cheat

Enable chat cheats on your save to get Crystalarium, then open the in-game chat. That unlocks the /debug commands built into Stardew Valley 1.6.9 — no mods required.

Run /debug iq ALL_ITEMS (BC) to open the item browser for this type, then left-click Crystalarium to drop it straight into your backpack.

How to enable chat cheats →