I've made a netsuke using a glass bead, or "tonbodama," created by melting glass with a tabletop burner at 1400 degrees Celsius. #nonohana's Netsuke Collection Handmade glass tonbodama, created using the lampworking technique, has been made into an obijime (sash ornament). Silver foil is applied to the surface of black glass, and then coated with blue glass. The total length, including the string, is about 10 cm. The size of the tonbodama is approximately 1.6 cm long and 1.4 cm wide. High-quality, domestically produced crystal glass is used for the glass material. Would you like it as a strap, netsuke, or bag charm? Because the glass is glossy and transmits light, the color of the actual product may differ slightly from the photos. Please understand this before purchasing. Color: Blue