This is a glass square plate. It's made by solidifying finely crushed marbles with glass and then cutting it into a square shape. It's a pair of gold and silver plates, and they are impressive pieces. The silver plate has a section on the cross-section that looks like a piece of shell. Other than that, there are no noticeable cracks or chips. Width: 20.2cm, Height: 2.5-4cm Search terms: Tonbodama (glass beads) S2