Wondrous Item

Varies

Soul gems are magical crystals that can be used to enchant and recharge magical items. These mystical gems come in various sizes that are capable of absorbing different sizes of souls and soul energies.
The Soul Gem table below lists the various sizes of soul gems. The size of the soul the gem can contain is determined by the creature’s Challenge Rating, as shown on the Max CR column.

Recharging. Recharging a magical item requires you to spend a short rest while within 5 feet of the item. At the end of the short rest, the magical energies of the gem transfer into the item, recharging it for an amount of charges as shown on the Charges column of the Soul Gems table. Once a soul gem is used in this way it is destroyed and any excess charges are lost.

Black Soul Gems. These nefarious items are grand soul gems that have been altered through special necromantic rituals and can only be used to trap humanoid souls. Any soul that is trapped within a black soul gem is transferred to the Soul Cairn when the crystal is destroyed.

Cost: see table