Smithing Stone [2] is an Upgrade Material in Elden Ring used for reinforcing equipment to +4, +5, and +6. Reinforced equipment boasts better stats. Upgrade Materials can be acquired through exploration, looting it from specified areas of a Location, dropped by a specific Enemy or Boss, given by an NPC, or sold by a Merchant.Stone used to smith a variety of armaments. A large shard found in plenty.