Gifu Chert <Gifu Prefecture> [Famous Japanese Stones]

GIFU Chert

Gifu Chart

These fossils are radiolarians and sponges deposited on the seafloor.
If you look at the cross section with a magnifying glass, you may be able to see fragments of the fossil.
It can only be formed when there are no other minerals mixed in with the seabed, and because certain environmental conditions must be met, there are only a limited number of places where it can be found.
The chert in Gifu is a Triassic deposit, and some of its sources have been designated as natural monuments.
The stone itself is very hard and layered, so when it breaks it becomes sharp.
It is colorful and transmits light, so it looks very beautiful.

It is the fossils of radiolarians and sponges deposited on the ocean floor. If you look at the cross section with a magnifying glass, you may be able to see fragments of the fossil. It cannot be formed unless other minerals are mixed with the ocean floor, and because the environment must meet certain conditions, its production areas are limited. Gifu's chert is deposited from the Triassic period, and some of its production areas have been designated as natural monuments. The stone itself is very hard and made, making it sharp when broken. Not only are they colorful, they also allow light to pass through them, making them look very beautiful.