Stardew Valley: How To Get & Use The Crystalarium

This guide explains how to obtain and use the Crystalarium in Stardew Valley, a valuable tool for efficiently producing gemstones and minerals. The 1.6 update introduced subtle 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 (forged from Gold Ore with Coal in a Furnace)
• 2 Iridium Bars (forged from Iridium Ore found in Skull Cavern or from the Statue of Perfection)
• 1 Battery Pack (obtained from a Lightning Rod struck by lightning)

Alternatively, obtain a Crystalarium by:

• Completing the 25,000g Community Center bundle.
• Donating 50 minerals to the Museum.

Using the Crystalarium

Place the Crystalarium anywhere – indoors or outdoors. The Quarry is a popular location for multiple Crystalariums.

The Crystalarium replicates any mineral or gemstone (except Prismatic Shards). Quartz has the shortest growth 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 replicated will drop. To change the gem being replicated, simply interact with the Crystalarium while holding the desired gem; the old gem will be ejected.

By using the Crystalarium, players can significantly increase their gemstone production, boosting profits and improving relationships with villagers who appreciate gemstone gifts.