These are glass beads made by firing sheet glass in an electric kiln. Blue Green - 20 pieces They can be used as stained glass materials or, with the addition of metal fittings, as accessories such as pendants and earrings. The surface is smooth, but the back is rough and flat. Some have thin release paper remaining. There are no holes. The sizes come in various shapes. Approximately 12mm-13mm Please check the photos. They have bubbles and lines unique to fusing. Some are also oval. We hope you enjoy them as part of the design. Thank you. ＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊ ※ We pay close attention to lighting and the environment when taking photos to convey the color and shape of the product as closely as possible to the actual item, but the appearance may vary depending on your computer and settings. Please understand that there may be differences in color from the actual product. ※ Glass will break if subjected to impact. Please handle with care.