Kizan Stone (Fukushima Prefecture) [Famous Stones of Japan]

Kizan Stone

Kiyama stone

Kiyama stone is a granite type stone quarried in Shibayama in the Kamisasaka district, which straddles Iwaki City and Hirata Village in Fukushima Prefecture.
Its weather-resistant, hard, and shining beauty has captivated people.
Kiyama stone has a beautiful surface that is like silk.
No other granite like this is found in the Hokuriku region, demonstrating just how special Fukushima Prefecture's geology is.
Its main components are quartz, feldspar, and biotite, and one of its charms is that when exposed to sunlight, the sparkling biotite appears to float on the surface of the stone.

Kizan Stone is a granite-type stone that is quarried at Shibayama Mountain in the Kamimisaka district in Fukushima Prefecture. The charm points of Kizan Stone are it is resistant to weathering, shiny and beautiful. Kizan Stone has a smooth texture like silk. This is the only granite that produced In Hokuriku region so this indicates how special the geology of Fukushima Prefecture is. Quartz, feldspar and biotite are the main components. The biotite that glitters when exposed to sunlight makes it look like floating on the surface of the stone and this is also one of the charm points of Kizan Stone.

Origin Fukushima Prefecture
meaning Wishes, future, healing, hope
Mineral Classification biotite fine grained granite
chemical composition Si₂, Al₂O₃, K₂O, Na₂O, CaO, Na₂O
Crystalline Monoclinic
cleavage Complete in one direction
Mohs hardness 7
gloss Glass gloss
color Black, white
specific gravity 2.5 to 2.8
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