Grain of Aerosiderite

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.

	Grain of Aerosiderite
	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.