- Cathedral of the Deep
- On a corpse on the rafters leading to Rosaria. The corpse is located at the far wall.
- Grand Archives
- On a corpse found along the rafters after dropping down from Gertrude's bird cage.
- One can be obtained once per playthrough by trading the Moaning Shield with the Nestling.
- Dropped by:
Infuses weapons with Blessed damage, granting Faith scaling but reducing Strength and Dexterity scaling, along with reducing base damage considerably. Additionally, the player gains health regeneration of 3 HP every 3 seconds whilst the infused weapon is drawn.
If a weapon with innate, non-scaling lightning damage is infused, the gem will also add some Faith scaling to the lightning damage.
- The Sage's Coal is required in order to use Blessed Gems for infusion.
- The first health-restoring effect when wielding a Blessed weapon takes place immediately. This can be exploited by equipping two Blessed weapons on the same hand and switching between them constantly, regaining 3 HP for each change, allowing to restore a high amount of health in just a few seconds.