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 12 pieces. Sizes are approximately 2.5 to 3.1 cm in diameter. They are oval-shaped. The base is clear blue glass, with each piece incorporating a different accent color of glass. Some have slight scratches, but they are in good condition overall. Please check the photos for detailed condition and size information. Please read and agree to the contents of the profile section. We look forward to your purchase.