The Cracked Black Crystal puzzle in Genshin Impact is found in the southeastern part of Crystal Tree-Grotto. You can enter the area during the Let Not All Rivers Run Dry World Quest. Upon reaching the area, Paimon suggests using Light-Focusing Pedestals to blast the Blightkristalls to bits.

Here's how you can find and solve all the quest challenges inside the House of Hesperides in Genshin Impact.

To solve the Cracked Black Crystal puzzle in Genshin Impact, you must follow these steps:

Next, take the lamp crystal from the Luminous Lamp Crystal and place it on the Light-Focusing Pedestal.

Aim the Luminous Beam towards the blue crystal by the broken building to remove the first Cracked Black Crystal. This will reveal the Refraction Mechanism Blueprint.

Interact with the Prime Ice Construct. Turn the Luminous Beam towards the blue crystal in front of it.

Finally, go to the second Light-Focusing Pedestal and aim it at the Blightkristall to remove it.

Enter the crack in the wall to locate a Precious Chest, which may contain a Remnant Incense Guide - Novokitezhgrad in Genshin Impact. If you find one, you’ll need to find two more to unlock the local Shadow Realm Treasure Vaults.

After taking the Precious chest, destroy the ice inside the building to go deeper.

There's an ancient fae script that you can reveal using a Luminous Lamp Crystal. Afterward, you can go to the second floor to find a Cryoculus. Collect it, then head up more to unlock the door that leads outside.

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