Genshō-seki slate; type of slate from Miyagi Prefecture
A specific variety of slate quarried in Miyagi Prefecture, used for traditional roofing, calligraphy inkstones, and other stonework. The term is primarily encountered in geological, architectural, or local cultural contexts.
Genshō-seki slate from Miyagi Prefecture has been used as roofing material since ancient times.
This inkstone is made of Genshō-seki slate.
The name 玄昌石 (Genshō-seki) is derived from the place name 玄昌 (Genshō) in Miyagi Prefecture where this slate is quarried, combined with 石 (stone). The exact origin of the place name is uncertain.