Inner diameter approximately 14.5cm *As this item is also listed on other sites, please consider purchasing it soon if you are interested☆ This has a slightly smaller inner diameter. How about it as a gift or for yourself? It has iris (rainbow) and high transparency☆ Large beads also have some high-quality rutile. The effects of rutile quartz are said to improve financial and career luck, intuition and insight, and to bring "good luck." In addition, it is expected to have the effect of family harmony, the power to protect the owner's aura from "evil and bad luck," and the activating effect of enhancing energy and vitality. All of our natural stones have been purified, and we offer anonymous shipping and free shipping. The photos are posted without processing to get as close to the actual product as possible, but there may be slight differences in size, color, and pattern. We hope you will enjoy it as a unique characteristic of natural stones (*^^*) Please note that returns and exchanges due to differences in image after arrival are not accepted. Material...Natural stone Bracelet/Bangle...Bracelet