Maximize Crops: Discover the Crystalarium in Stardew Valley

This guide explains how to obtain and utilize the Crystalarium in Stardew Valley, a valuable tool for multiplying gemstones and minerals. Note that some information reflects changes introduced in the 1.6 update.

Obtaining a Crystalarium

The Crystalarium crafting recipe unlocks at Mining Level 9. Required materials include:

• 99 Stone: Easily obtained by breaking rocks.
• 5 Gold Bars: Smelt Gold Ore (found at mine levels 1-80) using a Furnace and Coal.
• 2 Iridium Bars: Smelt Iridium Ore (found in Skull Cavern or from the Statue of Perfection) using a Furnace and Coal.
• 1 Battery Pack: Obtained by placing a Lightning Rod outside during a thunderstorm.

Alternatively, you can acquire a Crystalarium by:

• Completing the 25,000g Community Center bundle (Vault).
• Donating at least 50 minerals (gemstones or geodes) to the Museum.

Using the Crystalarium

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

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 current gem will be ejected, and the new one will begin replicating.

By using the Crystalarium, you can significantly increase your profits and create valuable gifts for Pelican Town's residents.