Japanese traditional folk art "Ohajiki" (Go Stone Marbles)

Japanese traditional folk art "Ohajiki" (Go Stone Marbles).

This item is very popular as prize gift at various Igo competitions.
Colored clamshell white Go stone and Nachi guro black Go stone polished to make the Japanese traditional folk art "Ohajiki".
The shapes are irregular, but the diameters are about the same size.
*Go stone is out of the standard, so there are scratches.
*Photo image is sample.