BoltStone is a type of upgrade material in Dark Souls 2.
- Can only be used at Blacksmith Steady Hand McDuff
- Used to imbue equipment with lightning. This reduces the Strength and Dexterity scaling, but adds a Faith scaling. (Different weapons add different tiers of scaling).
- Unlimited amount sold by Blue Sentinel Targray for 7,000 souls.
- Randomly given in exchange for Smooth & Silky Stone with Dyna and Tillo.
- Sold by Stone Trader Chloanne after obtaining the King's Ring.
- Dropped by a Crystal Lizard in Shaded Ruins near Manscorpion Tark.
- Found on a corpse near the first dragon in Dragon Aerie. Can be farmed using Bonfire Ascetics, alongside a lot of other useful upgrade materials.
- 3 Boltstones are found in a chest in the Dragon Sanctum (Crown of the Sunken King DLC) along with 3 Bleedstones.
- 3 in an iron chest in Frozen Eleum Loyce in the area with the visible Witch Trees.