How do I get Moonstone in Core Keeper?

Moonstone is a rare offhand from the Crystal biome. It can be obtained through: drop.

What does Moonstone do in Core Keeper?

Moonstone provides: +31 max mana, +83% of damage taken is absorbed by your mana pool.

Accessory

RareOffhandCrystalLevel 14

Moonstone is a rare offhand accessory in Core Keeper, from the Crystal biome. Grants 2 effects when equipped.

This pristine crystal is filled with energy. It makes you feel determined.

Data updated March 16, 2026MoonstoneOffhand #8369

Lv.1420

Durability

+31 max mana

+83% of damage taken is absorbed by your mana pool

Biome: Sea

17.2%

Biome: Desert

12.6%

How do I get Moonstone in Core Keeper?: Moonstone is a rare offhand from the Crystal biome. It can be obtained through: drop.
What does Moonstone do in Core Keeper?: Moonstone provides: +31 max mana, +83% of damage taken is absorbed by your mana pool.