Twin Blood Stone Shards are a material in Bloodborne.
- A solid shard that forms in coldblood.
- After death, a substance in the blood hardens, and that which does not crystalize is called a blood stone.
- At the workshop, these bloodstones are embedded in weapons to fortify them.
Twin Blood Stone Shards are used to upgrade +3 Weapons to +4 > +5 > +6. This can be done by choosing "Fortify Weapon" at the Workshop, in the Hunter's Dream.
- Upgrading a weapon to +6 unlocks the 3rd and final Blood Gems Imprint slot.