Tosa Sakura (Kochi Prefecture) [Famous Stones of Japan]
Tosa Sakura
Tosa cherry blossoms
Tosa Sakura is a precious limestone containing coral fossils from 423 million years ago (Silurian period of the Paleozoic era).
Tosa cherry blossoms are produced near the summit of Mount Yokokura.
Parts of Shikoku, including Kochi Prefecture, were located near the equator in ancient times and were underwater, so they contain fossils of honeysuckle corals, chain corals, and sea lilies.
It was called "cherry blossom" stone because of its pale pink surface.
Sakamoto Ryoma said he was going to see the cherry blossoms and headed straight to Kyoto, where he changed the course of Japanese history.
This is a Tosa stone that truly brings to mind Ryoma.
Tosa Sakura is a precious limestone contained in coral fossils created during the Silurian period which is 423 million years ago. Tosa Sakura is currently produced from near the top of Mount Yokokura. The stone surface is from red to light pink so we call it the stone of “Sakura”(cherry blossom). Tosa Sakura is the stone of Tosa (the old name of Kochi Prefecture) that reminds people of Sakamoto Ryoma. It is because He said “I am going to see the cherry blossoms.”, then he went to Kyoto, never went back to Tosa, and changed the history of Japan.
| Origin | Kochi Prefecture |
|---|---|
| meaning | Leadership, the power to change the future |
| Mineral Classification | crystalline limestone |
| chemical composition | CaCO3, Mg, etc. |
| Crystalline | hexagonal system |
| cleavage | Perfect in three directions |
| Mohs hardness | 5.0 to 6.0 |
| gloss | Glass gloss |
| color | white, light pink, etc. |
| specific gravity | 2.5 to 2.9 |


