Suseok

Suseok (수석) is the Korean term for small naturally occurring or shaped rocks which are traditionally valued. They are similar to Chinese scholar's rocks.
"Suseok" can be any color. There are a wide variety of sizes. "Suseok" can weigh hundreds of pounds or less than one pound. The term also means stones which are placed in traditional Korean gardens.
History.
Chinese scholar's rocks influenced the development of "suseok" in Korea. 
Evaluation.
The evaluation of "suseok" recognizes color, shape, markings and surface.