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 crafting recipe unlocks at Mining Level 9. Required materials are:

• 99 Stone: Easily obtained by breaking rocks.
• 5 Gold Bars: Smelt Gold Ore (found at mine levels 80 and below) 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, obtain a Crystalarium by:

• Completing the 25,000g Community Center bundle in the 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 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. If active, the current gem will drop. To change the gem being replicated, simply interact with the Crystalarium while holding the desired gem; the old gem will be ejected.

Efficiently use Crystalariums to boost profits and enhance relationships with villagers who appreciate gemstones as gifts. Diamonds are particularly valuable for both purposes.