Thank you for viewing. This product is a 〈Natural Stone Bracelet〉 - Iris Quartz - Bead size: 10mm (10.3~10.8mm beads) - Inner diameter: 17cm ※ 1 This product is natural iris quartz, so unlike artificial ones, it is less likely to display rainbows. If you want to enjoy many rainbows of iris, we recommend artificial iris quartz. m(_ _)m ※ 2 Because this iris quartz is natural, many beads contain impurities. We have attached photos, so please check them and consider purchasing. The photos posted are taken to closely resemble the actual product, but please understand that there may be slight differences due to the photography equipment. Shipping is planned via Kuroneko Yamato Nekopos. ※ To prevent trouble, we have included precautions in our self-introduction, so we recommend that you read it.