Stardew Valley: How To Get & Use The Crystalarium

This guide explains how to obtain and utilize the Crystalarium in Stardew Valley, a tool for efficiently producing gemstones and minerals. The 1.6 update introduced minor changes to its functionality, which are addressed here.

Obtaining a Crystalarium

The Crystalarium recipe unlocks at Mining Level 9. Crafting requires:

• 99 Stone
• 5 Gold Bars (from Gold Ore smelted with Coal in a Furnace)
• 2 Iridium Bars (from Iridium Ore smelted in a Furnace; found in Skull Cavern or from the Statue of Perfection)
• 1 Battery Pack (obtained by placing a Lightning Rod outside during a thunderstorm)

Alternative acquisition methods:

• Community Center Bundle: Complete the 25,000g bundle in the Vault.
• Museum Donation: Donate at least 50 minerals (gemstones or geodes) to the Museum.

Using the Crystalarium

Place the Crystalarium anywhere (indoors or outdoors). Popular locations include the Quarry for mass production.

The Crystalarium replicates any gemstone or mineral (except Prismatic Shards). Quartz has the shortest production time but low value. Diamonds have the longest (5 days) but highest value.

To move a Crystalarium, hit it with an axe or pickaxe. Any gem currently being produced will drop. To change the gem type, simply interact with the Crystalarium while holding the desired gem; the old gem will be ejected.

Efficiently produce valuable gems for profit or gifting, significantly boosting your in-game wealth and relationships.