Isahaya stone (Nagasaki Prefecture) [Famous Japanese Stones]
ISAHAYA Stone
Isahaya stone
This hard sandstone is mined in Isahaya City, Nagasaki Prefecture, where the Sengoku period warlord Ryuzoji, formerly known as the Isahaya clan, was based.
Ryuzoji Takanobu was one of the three most powerful Sengoku warlords in Kyushu and was known for his quick decision-making ability.
According to Luis Frois's records, his decisiveness was so great that "even the speed and wisdom of Caesar could not have attempted it."
The name Isahaya was changed from Ryuzoji during the time of Ieharu, one of the four Ryuzoji families.
The Isahaya family's territory was said to have been very wealthy and had a very high kokudaka (rice yield).
Isahaya stone is one of the famous stones produced in the territory.
This hard sandstone is produced in Isahaya City, Nagasaki Prefecture, where the Sengoku period warlord Ryuzoji, formerly known as the Isahaya clan, was located. Ryuzoji Takanobu was one of the three most Sengoku period warlords in Kyushu, and was known for his quick decision-making ability. In the records of Luis Frois, he described his decisiveness as being "unparalleled even by the speed and wisdom of Caesar." name Ryuzoji was changed to Isahaya during the time of Ieharu, one of the four Ryuzoji families. The Isahaya family's territory was very high, and they were said to have been wealthy. Isahaya stone is one of the Japan stones produced in that territory.
| Origin | Nagasaki Prefecture |
|---|---|
| meaning | Wisdom, financial luck, quick decision-making ability |
| Mineral Classification | - |
| chemical composition | - |
| Crystalline | - |
| cleavage | - |
| Mohs hardness | - |
| gloss | |
| color | - |
| specific gravity | - |
