Uncover the Secrets of Crystallium in Stardew Valley

This guide explains how to obtain and utilize the Crystalarium in Stardew Valley, a valuable tool for gem and mineral replication. Note that this guide reflects the 1.6 update's changes.

Obtaining a Crystalarium

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

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

Alternatively, obtain a Crystalarium by:

• Completing the 25,000g Community Center bundle (Vault).
• Donating 50 minerals 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 mineral or gemstone (except Prismatic Shards). Quartz has the shortest growth time but low value. Diamonds offer the highest profit despite a 5-day growth time.

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

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