Thank you for viewing! This is a natural stone bracelet using Kyanite in Quartz, Ice Kyanite, Kyanite Silica, Fluorite, Iris Quartz, and Aquamarine. The center Kyanite is approximately 11mm in size. The Kyanite in Quartz on the sides of the center and in the back is approximately 9mm. The Kyanite on the sides and back sides is approximately 7mm. The light blue Ice Blue Kyanite on the back side is approximately 7mm. The Kyanite Silica next to it is approximately 6.8mm. The Fluorite on the side is approximately 7mm. The Iris Quartz is approximately 7.2mm. The Aquamarine in the back is approximately 7.2mm. The inner diameter of the bracelet is approximately 17cm. *Please note that there may be some errors due to amateur measurements. We try to photograph the item to reflect the actual colors as closely as possible. Please understand that the appearance may vary slightly depending on your device. Due to the nature of natural stones, there may be inclusions, cracks, chips, dents, black spots, discoloration, etc., and there may be slight variations in size and weight. Please understand. Please refrain from purchasing if you suspect the item is fake, are overly concerned with minor details, or are seeking perfection. To prevent substitution, we cannot accept returns or refunds for reasons such as a different size or a different impression than expected after purchase. Please purchase with your understanding. Size adjustments are possible. If the inner diameter is made smaller, the extra beads will be separated into a small bag and packaged with the bracelet. If the size is increased, crystal beads will be added for adjustment. The current photos represent everything, so please be sure to check them carefully before purchasing. You can purchase without comment. If you have any questions, please ask before purchasing. High quality, transparency, blue, blue