The Piece of Aerosiderite is a primary weapon ascension material in Genshin Impact. This page contains information on where to obtain Piece of Aerosiderite and what weapons it can be used for ascension.
 | Piece of Aerosiderite | |
|---|---|---|
| Item Type | Weapon Ascension Materials | |
| Rarity | ★★★ | |
| Obtained From | Hidden Palace of Lianshan Formula | |
| Availability | Wednesday, Saturday, Sunday | |
| Purchase From | N/A | |
| Other Source | Alchemy, Parametric Transformer | |
Descriptions
Rumors of sea monsters are commonplace in Liyue, since the other-shore is an unknown region that lies outside of Teyvat. Without the protection of The Seven, all that lies beyond is unknown chaos. Only power beyond the order of Teyvat is able to stain the power of Rex Lapis black.