Inner circumference: Approximately 15 cm Morion Pixiu: Approximately 10 x 9 x 8 mm Morion: Approximately 8 mm (slightly less) Iris: Approximately 10 mm Rutile: Approximately 6.5 mm Combined the protective Morion Pixiu and round beads with Iris and Rutile. There may be some natural stone imperfections. If you have any concerns, please feel free to comment. Thank you.