The Spellcrux Amulet is a necklace in Baldur’s Gate 3 which gives you one free spell slot of any level once per long rest.
Baldur’s Gate 3 Spellcrux Amulet Stats
Spellcrux Amulet
Very Rare
Spell Slot Restoration: Replenish an expended spell slot of any level as a Bonus Action once per Long Rest.
Some scholars have speculated that spells have a mind of their own, suggesting that the spells get bored between being cast and restored.
0.05 
210 
Baldur’s Gate 3 Spellcrux Amulet Location
The Spellcrux Amulet is looted off of the Warden down in Moonrise Towers Prison (X: 569 Y: -650) during Act 2.
