Price reduced. Purchased on Mercari. Due to circumstances, I am currently decluttering and reluctantly listing this item. It has an antique look, and the length can be adjusted between approximately 17-19.5 cm. There is no material marking on the bracelet itself. The opal has a gentle color. Please understand that this item has been in someone's possession before. Measurements, inspections, and storage are done by a non-professional, so there may be errors or oversights. Please understand this. I am working, so it may take time to respond or ship. Thank you for your understanding. I cannot guarantee against damage caused by impact during shipping. Simple packaging using recycled materials.