Inner diameter: approximately 16 cm Bead size: approximately 10 mm Please note that there may be slight variations. ⚠ Some images show a deep blue color. Image 1 is the closest to the actual color. No appraisal certificate is included! The supplier called it "blue sagenitic," but I was concerned, so I had an appraisal done. Appraisal completed for the same lot from the same supplier. Please check images 9 and 10. Colored material is used. There are small holes in the quartz, and the colored material is used to fill and seal them. The colored material is dyed, and if a large amount is used, it will be identified as dyed, but in this case, it is considered natural quartz because the amount used is small (trace). Please check image 12. (Not from the beads incorporated in this bracelet) It is almost not present, but it is rarely seen. Other color variations and inclusions are natural. Spherulitic Spherical I think it's cute and rare with pale blue dumortierite in granular form. As it is a natural stone, there may be cracks, inclusions, natural dents, black spots, color unevenness, and fine scratches. Natural stone Natural stone bracelet Dumortierite in quartz Spherulitic dumortierite in quartz Rare stone Power stone