Suiseki

is the Japanese term for small naturally occurring or shaped rocks which are traditionally appreciated. They are similar to Chinese scholar's rocks.
"Suiseki" can be any color. There are a wide variety of sizes. "Suiseki" can weigh hundreds of pounds or less than one pound. The term also means stones which are placed in traditional Japanese gardens.
History.
Chinese scholar's rocks influenced the development of "suiseki" in Japan. The history of "suiseki" in Japan begins during the reign of Empress Suiko. The small objects were brought to Japan as gifts from the Chinese Imperial court.
Evaluation.
The evaluation of "suiseki" recognizes color, shape, markings and surface. According to in ,
It is not a silly thing at all to enjoy a stone in a tray. I see the whole world in a tiny stone. Some objects in this world are huge, and others are small, and they come in all shapes, but they are not that different when you look at their essence.
Some types of "suiseki" suggest a mountain, a waterfall, an island, a thatched hut or an animal.