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The Grain of Aerosiderite is a primary weapon ascension material in Genshin Impact. This page contains information on where to obtain Grain of Aerosiderite and what weapons it can be used for ascension.
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![]() | Grain of Aerosiderite | |
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Item Type | Weapon Ascension Materials | |
Rarity | ★★ | |
Obtained From | Hidden Palace of Lianshan Formula | |
Availability | Wednesday, Saturday, Sunday | |
Purchase From | Souvenir Shop in Liyue | |
Other Source | Parametric Transformer |
Descriptions
A black meteor once fell beyond Liyue’s Sea of Clouds, said to have fallen to vanquish a monster. However, it was stained by powerful tainted blood, so this item no longer possesses the pure power of Rex Lapis.