This is a tonbo-dama (glass bead) purchased from a tonbo-dama workshop in Izu Kogen. It's a large tonbo-dama with a diameter of 25mm. It's a tonbo-dama with a deep red color and decorated with many white and black eye patterns, making it a classic tonbo-dama. As you can see in the photo, a string for a necklace is attached. It has never been used since purchase and has been carefully stored in a display case at home. #IzuKogen #tonbodama #tonbogyoku #glass #craft