These appear to be old glass "mame-keri" or "ohajiki" (Japanese traditional game pieces). One side is hemispherical and the bottom has a groove. This is a set of 10. Size is approximately 2.5-3cm. They are made of clear green glass with accents of other colors mixed in. Some have slight scratches, but they are in good condition overall. Please check the photos for detailed condition and size information of the items. Please also read and agree to the content of the profile section. We look forward to your purchase.