How to use the Crystalarium in Stardew Valley
Just shove any gem (except Prismatic Shards and Diamonds) into the Crystalarium and wait. The thing's basically a gem photocopier!
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Tried using a Prismatic Shard once. Big mistake. Stick to the regular gems, folks, and you'll be swimming in riches!
Using the Crystalarium in Stardew Valley is super simple! Just pop a gem of your choice into the Crystalarium, and voila, it will eventually grow and replicate that gem. Remember, it can't replicate Prismatic Shards or Diamonds though. Patience is key because each gem takes different amounts of time to duplicate.
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