Natural Stone Power Stone Bracelet Onyx Main Beads: Approximately 12mm Parent Beads: Approximately 10mm Two Heavenly Beads: Approximately 6.5mm Inner Diameter: Approximately 17.5cm Photo 4 compares the sizes, large and small. The top is large, the bottom is small. This is a prayer bead bracelet with the Heart Sutra engraved on it. ~~~~~~~~~~~~~~~~~~~~~~【Onyx】~~~~~~~~~~~~~~~~~~~~~~ Stone to protect against evil spirits Strengthens one's core will Enhances perseverance ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Regarding power stone bracelets, These are sourced from a reputable, long-established stone shop. Of course, they are new and unused, so please consider purchasing with confidence. Although the bracelet elastic is strong, we recommend replacing it after a few years. As these are natural stones, there may be what appear to be cracks, scratches, inclusions, or chips. The color may appear different from the images due to the type and settings of your computer and monitor. Please understand that there are no completely identical products. #PrayerBeads #HeartSutra