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The '''Crystalarium''' will replicate any inserted [[Minerals#Gems|Gem]], [[Minerals#Foraged Minerals|Foraged Mineral]], or [[Minerals#Geode Minerals|Geode Mineral]]. Note, however, that Crystalariums cannot replicate [[Prismatic Shard]]s. The functions of the Crystalarium are explained in the Lost Book ''[[Lost Books#Technology Report!|Technology Report!]]''.
The '''Crystalarium''' is a [[Crafting|crafted]] item that will replicate any inserted [[Minerals#Gems|Gem]] (except [[Prismatic Shard]]), [[Minerals#Foraged Minerals|Foraged Mineral]], or [[Minerals#Geode Minerals|Geode Mineral]]. The functions of the Crystalarium are explained in the Lost Book ''[[Lost Books#Technology Report!|Technology Report!]]''.
Its main source is [[Crafting|crafting]]. Other than it, One Crystalarium is the reward for donating 50 [[Minerals]] to the [[Museum]]. One Crystalarium is also the reward for completing the {{Bundle|25000|16|y}}. Occasionally it can be found in a [[Skull Cavern#Treasure Rooms|treasure room]] in the Skull Cavern.
One Crystalarium is the reward for donating 50 [[Minerals]] to the [[Museum]]. One Crystalarium is also the reward for completing the {{Bundle|25000|16|y}}. Occasionally it can be found in a [[Skull Cavern#Treasure Rooms|treasure room]] in the Skull Cavern.
Once an item is inserted, it will replicate that item an infinite number of times. Once a gem or mineral has been inserted into the Crystalarium, it can be retrieved at any time by removing the Crystalarium with a tool.
Once an item is inserted, it will replicate that item an infinite number of times. Once a gem or mineral has been inserted into the Crystalarium, it can be retrieved at any time by removing the Crystalarium with a tool.
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==Tips==
==Tips==
*The most profitable gem to replicate is the [[Diamond]], yielding a profit of {{Price|150}} per day if harvested as soon as it is ready (five days). At this rate, the base monetary value of the materials used in crafting the Crystalarium can be recovered in about 32 days (not including a Diamond used to seed it, nor any increase in the value of the crafting materials due to profession bonuses).
*Crystalariums can be used to replicate minerals ''en masse'' that can be traded at the [[Desert Trader]] for helpful items or [[Friendship#Gifts|gifted]] to villagers as loved or liked gifts.
**[[Diamond]]s can also be traded in with the [[Desert Trader]] for the [[Triple Shot Espresso|triple shot espresso]].
**Diamonds are also either liked or loved by all villagers, making the replication of Diamonds useful for gift-giving purposes.
*[[Earth Crystal]]s can be replicated in about 13 in-game hours, providing two nearly universally liked gifts each day. This is more efficient than replicating Diamonds and either gifting them or selling them for [[Salad]], which is the cheapest universally liked item that can be purchased.
*Only 7 in-game hours is required to replicate [[Quartz]], the shortest time span for any mineral. While the Crystalarium is thus an efficient source of Quartz for making [[Refined Quartz]], Quartz is found abundantly during mining and making Refined Quartz still requires [[Coal]] for smelting. Refined Quartz can also be produced directly in a [[Recycling Machine]] from [[Broken Glasses]] and [[Broken CD]]s, without needing coal.
**Five Quartz can be traded at the [[Desert Trader]] for 1 [[Bomb]], making the replication of Quartz in Crystalariums a more cost-effective method of obtaining Bombs than purchasing them from the [[Dwarf]]'s shop for {{Price|1000}} each.
*The Crystalarium can replicate [[Jade]] for trading with the [[Desert Trader]] for [[Staircase]]s on [[Days of the Week#Sunday|Sundays]]. The staircases can then either be used in the Skull Caverns or inserted into a [[Deconstructor]] to produce 99 [[stone]]. This can save countless hours gathering stone.
*The Crystalarium can replicate [[Ruby|Rubies]] for trading with the [[Desert Trader]] for [[Spicy Eel]]s. The Spicy Eels can then be eaten to increase [[luck]] and [[Speed#Player Speed|player speed]]. This can also save time from [[cooking]] them with [[eel]]s and [[Hot Pepper|hot peppers]].
*Replicating [[Fire Quartz]] may be worthwhile; it takes only about 22 hours. It is required in the crafting recipe of a [[Dehydrator]]. One Fire Quartz and one [[Coal]] also produce three Refined Quartz when placed in a furnace, a greater efficiency than refining Quartz.
==References==
==References==
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{{History|1.4|Can now be stacked in a player's [[inventory]] and in [[chest]]s.}}
{{History|1.4|Can now be stacked in a player's [[inventory]] and in [[chest]]s.}}
{{History|1.5|Removing a Crystalarium that isn't ready for harvest will now drop the gem that was placed in it.}}
{{History|1.5|Removing a Crystalarium that isn't ready for harvest will now drop the gem that was placed in it.}}
{{History|1.6|Inserting a new gem into a Crystalarium now pops the previous one out, instead of silently replacing it.}}
{{History|1.6|Crystalariums now have to be removed and replaced before a different gem can be put inside, to help avoid wasting gems accidentally.}}
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{{NavboxEquipment}}
Latest revision as of 17:49, 25 September 2026
Crystalarium
Insert a gem of your choice and it will grow copies.
|keywords=Stardew Valley Wiki, Stardew Valley, Crystalarium, gift
|site_name=Stardew Valley Wiki
|type=article
|title=Crystalarium - Stardew Valley Wiki
}}
The Crystalarium is a crafted item that will replicate any inserted Gem (except Prismatic Shard), Foraged Mineral, or Geode Mineral. The functions of the Crystalarium are explained in the Lost Book Technology Report!.
One Crystalarium is the reward for donating 50 Minerals to the Museum. One Crystalarium is also the reward for completing the 25,000 Bundle in the Vault. Occasionally it can be found in a treasure room in the Skull Cavern.
Once an item is inserted, it will replicate that item an infinite number of times. Once a gem or mineral has been inserted into the Crystalarium, it can be retrieved at any time by removing the Crystalarium with a tool.
Use
Note that times to craft are approximate, since time passes differently from 2am to 6am. One hour = 60 minutes from 6am to 2am, but 1 hour = 100 minutes from 2am to 6am. One full day is 1600 minutes, where day is 1200 minutes and night is 400 minutes.
Crystalariums can be used to replicate minerals en masse that can be traded at the Desert Trader for helpful items or gifted to villagers as loved or liked gifts.
References
↑See Object::performObjectDropInAction and Data/Machines.xnb for corresponding items.
History
1.3.27: Removed an exploit that replaced a ready-to-harvest mineral with a more expensive mineral.