Infernal gem

Infernal Gem is a kind of environmental object in Baldur's Gate 3. It serves as a door lock for Raphael's Vault.

Involvement

Infernal Gem is inside the ⁠House of Hope, directly south of the entrance to the Boudoir. It bars entrance to Raphael's Vault.

Passing a  DC 10 Perception Check is needed to spot the gem. Named "Inert Infernal Gem", it can be interacted with, causing the party member to roll a  DC 10 Wisdom Check. If successful the gem starts glowing and is renamed "Infernal Control Gem". Interacting with it again causes a roll for a  DC 20 Arcana Check. If successful the gem dissappears and the door behind it opens, allowing access to Raphael's Vault.