The Brightstone Key is a key in Dark Souls II.
- Key to brightstone Cove Tseldora.
- The eccentric Lord Tseldora, known for his fascination with spiders, built a town and a personal fortune by mining brighstone.
- One day, the town was overrun by spiders, but Lord Tseldora only stood by and watched, eerily contented.
Acquired by killing Lord Tseldora in the Lord's Private Chamber.
Opens a locked door in Brightstone Cove Tseldora in the room after the black phantom villager, where Parasite Spiders come from the ceiling. Through the door is more spiders and a chest containing a Fire Seed, Black Knight Ultra Greatsword, and Great Fireball.