Diameter: Approximately 1.8cm Thickness: Approximately 0.5cm This is a round, puffy glass pendant top. It was made by firing glass. You can use it by threading a leather cord or chain through it. We hope you enjoy it as a unique handmade item. Please note that there may be cracks (inside) that occur when the glass pieces fuse together during glass fusing, and there may be scratches from cutting the glass. Please check the images for scratches, etc. Showa Retro Handmade One of a kind Glass accessories