Inner diameter: approximately 16 cm Dumortierite: approximately 12 mm (early) Larimar: approximately 17.4 mm Opal: approximately 4 mm Please allow for some margin of error. Spherulitic Dumortierite in Quartz Identification from the same lot confirmed. These are lovely stones with a pale blue base and white inclusions. High-quality Larimar The color and pattern are clear, and it has a glossy appearance. It is translucent when held up to the light. Precious Opal Small but beautiful play-of-color stones were used. As these are natural stones, there may be cracks, inclusions, natural indentations, black spots, color unevenness, and minor scratches. Natural stone Natural stone bracelet Design bracelet Dumortierite in quartz Larimar Blue Pectolite Precious Opal High-quality natural stone Power stone