金石簿五九數訣
石膽

石膽

石膽

出梁州，信都亦有，用羌理者，色青帶碧者，良。有用嶗山所出，形如月，黄緑相聞者，好。此二所出，嶗山稍勝，餘所出者，不如蒲州者爲上。

End of chapter
硭硝硝石

Text and scans: Shidian Guji (Peking University – ByteDance open ancient texts). Edition details are given per book. Shidian Guji

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