Grapestone (Gunma Prefecture) [Famous Japanese Stones]

Grape Stone

Grapestone

Sanbaishi is a stone from Gunma Prefecture, where it is mined.
This beautiful stone is a mixture of Sanba stone, reddish-purple grape color, and pale muscat green, and is characterized by its luster and wave-like pattern.
This crystalline schist was metamorphosed under high pressure and low temperature conditions (600-700 atmospheres, 200-300 degrees) from the late Jurassic to the early Cretaceous periods, and has a well-developed schistosity.
Depending on the minerals it contains, it can come in colors such as blue-green, yellow-green, white, and red.

This is a beautiful stone from Gunma Prefecture, where Sambaishi is produced. This stone is Sambaishi mixed with a reddish-purple grape color and pale muscat green.
It is characterized by its luster and beautiful patterns.
It is a crystalline schist metamorphosed at high pressure and low temperature (200-300°C, 600-700atm) from the late Jurassic to the early Cretaceous period, and has a well-developed schistosity. The color tone varies depending on the metamorphic minerals, with colors such as blue-green, yellow-green, white and red.