These are marbles I used to play with when I was an elementary school student. I played with them carefully, so I think they are still in good condition. I'm a little worried that the photos may not fully capture their beauty, but they have a rare, metallic blue color and are very beautiful. I think they would be useful as decorations as well. ※Please understand that if the actual appearance differs slightly from the photos, it is due to the limitations of the photos.