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The Ancient Dragon Smithing Stone is a legendary bolstering item in Elden Ring, capable of strengthening armaments to their maximum potential. Unlike other smithing stones, there is only a finite amount you can found during each journey.
Using an Ancient Dragon Smithing Stone, you can increase the power of a normal weapon from +24 to +25. For special weapons, a Somber Ancient Dragon Smithing Stone must be used to increase power from +9 to +10
For a detailed list on the locations of all 13 Ancient Dragon Smithing Stones, see our guide to All Ancient Dragon Smithing Stones. For a quick rundown, see the list below: